GCL 165-42 G Professional - Laser level BOSCH - Free user manual and instructions

Brand	Bosch
Model	GCL 165-42 G Professional
Product type	Line and point laser level
Laser class	2 (IEC 60825-1:2014)
Working range (lines)	30 m (100 ft)
Range with receiver	Up to 100 m (330 ft)
Point range (GCL model)	15 m (50 ft)
Leveling accuracy (lines)	±0.3 mm/m (±1/8 in at 30 ft)
Point accuracy	±0.7 mm/m (±9/32 in at 30 ft)
Self-leveling range	±4°
Leveling time	< 4 s
Operating modes	Cross lines, horizontal, vertical, points (GCL)
Power supply	3.7 V Li-ion battery pack (GBA37V30) or 4 LR6 (AA) batteries
Battery life	Approx. 24 h (depending on mode)
Protection class	IP65
Operating temperature	-10°C to +45°C (14°F to 113°F)
Storage temperature	-20°C to +70°C (-4°F to 158°F)
Tripod mount	1/4 in
Receiver compatibility	Bosch LR8 (optional)
Maintenance	Clean with a soft, damp cloth; no solvents
Warranty	Limited Bosch warranty (see website)
Box contents	Laser level, battery adapter, Li-ion battery pack, USB-C cable, case

Frequently Asked Questions - GCL 165-42 G Professional BOSCH

What are the operating modes of the GCL 165-42 G Professional?

The laser offers four modes: cross lines (horizontal + vertical forward), horizontal, vertical, and point projection (up and down). To switch, press the operating mode button.

How do I power the device?

You can use either the Bosch GBA37V30 Li-ion battery pack (3.7 V, rechargeable via USB-C) or 4 LR6 (AA) batteries (alkaline) in the included adapter.

How do I check the accuracy of the laser level?

Perform an accuracy test following the procedure in the manual (pages 42-45). For example, for the horizontal line, measure the deviation over 10 m: it must not exceed ±3 mm.

What should I do if the laser flashes rapidly?

Rapid flashing indicates the device is outside its self-leveling range (±4°) or in tilt mode. Place it on a more horizontal surface or use tilt mode deliberately.

Can I use rechargeable AA batteries?

The manual recommends alkaline manganese batteries for the AA adapter. Rechargeable NiMH batteries can be used but their lower voltage (1.2 V) reduces battery life.

How do I clean the laser level?

Use a soft, damp cloth (no detergents or solvents). Regularly clean the laser outlet openings to remove dust.

What is the battery life with the Li-ion battery pack?

Typical battery life is approximately 24 hours of continuous operation, depending on the mode used. A full charge takes about 2 hours via USB-C.

Is the laser waterproof?

Yes, it has an IP65 protection rating, which protects against dust and water jets. However, avoid immersion.

How do I use the tripod with this laser?

Screw the laser onto the tripod via the 1/4 in mount (located under the device). Use a tripod for measurements beyond 20 m to minimize errors due to temperature variations.

Where can I find spare parts or get the device repaired?

Contact an authorized Bosch after-sales service center. For parts, provide the 10-digit article number (3601K66R10) on the rating plate.

USER MANUAL GCL 165-42 G Professional BOSCH

Safety SymbolsThe definitions below describe the level of severity for each signal word.Please read the manual and pay attention to these symbols.
	This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.
	DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.
	WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.
	CAUTION indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.

Table of Contents

General Safety Rules .... 3

FCC Caution 5

ISED Canada 6

Intended Use 6

Symbols....7

Getting to Know Your Line Laser ..... 9

Technical Data 11

Preparation 13

Laser Tool Power Supply ..... 13

Battery Status Indicator ..... 14

Operation 16

Initial Operation 16

Switching On and Off ..... 16

Operating Modes ..... 16

Automatic Leveling ..... 17

Accuracy Check of the Laser Tool . . . 17

Use with Attachments.....21

Maintenance and Service ..... 27

Environment Protection ..... 27

General Safety Rules

WARNING

Read all instructions. Failure to follow all instructions listed below may result in hazardous radiation exposure, electric shock, fire and/or serious

injury.

SAVE ALL WARNINGS AND INSTRUCTIONS FOR FUTURE REFERENCE.

The term “laser tool” in the warnings listed below refers to your battery-operated (cordless) laser tool.

The following label is on your tool for your safety. ALWAYS BE AWARE of its location when using the laser.

GLL100-42G

GCL165-42G

DO NOT direct the laser beam at persons or animals and do not stare into the laser beam yourself. This laser tool produces class 2 laser radiation and complies with 21 CFR 1040.10 and 1040.11 except for conformance with IEC 60825-1 Ed. 3., as described in Laser Notice No. 56, dated May 8, 2019. This can lead to persons being blinded.

DO NOT stare directly at the laser beam or project the laser beam directly into the eyes of others. Serious eye injury could result.

DO NOT place the laser tool in a position that may cause anyone to stare into the laser beam intentionally or unintentionally. Serious eye injury could result.

ALWAYS make sure that any bystanders in the vicinity of use are made aware of the dangers of looking directly into the laser tool.

Never aim the beam at a workpiece with a reflective surface. Bright shiny reflective sheet steel or similar reflective surfaces are not recommended for laser use. Reflective surfaces could direct the beam back towards the operator.

Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

DO NOT use any optical tools such as, but not limited to, telescopes or transits to view the laser beam. Serious eye injury could result.

DO NOT leave the laser tool “ON” unattended in any operation mode. ALWAYS turn the laser tool “OFF” when not in use. Leaving the laser tool “ON” increases the risk of someone inadvertently staring into the laser beam.

Do not use the laser viewing glasses as safety goggles. The laser viewing glasses are used for improved visualization of the laser beam, but they do not protect against laser radiation.

Do not use the laser viewing glasses as sun glasses or in traffic. The laser viewing glasses do not afford complete UV protection and reduce color perception.

ALWAYS position the laser tool securely. Damage to the laser tool and/or serious injury to the user could result if the laser tool falls.

DO NOT remove or deface any warning or caution labels. Removing labels increases the risk of exposure to laser radiation.

SAVE THESE INSTRUCTIONS

General Safety Rules

Battery tool use and care

Recharge only with the charger specified by the manufacturer. A charger that is suitable for one type of battery pack may create a risk of fire when used with another battery pack.

Use tool only with specifically designated battery packs. Use of any other battery packs may create a risk of injury and fire.

When battery pack is not in use, keep it away from other metal objects like paper clips, coins, keys, nails, screws, or other small metal objects that can make a connection from one terminal to another. Shorting the battery terminals together may cause burns or a fire.

Under abusive conditions, liquid may be ejected from the battery; avoid contact. If contact accidentally occurs, flush with water. If liquid contacts eyes, additionally seek medical help. Liquid ejected from the battery may cause irritation or burns.

Do not use a battery pack or tool that is damaged or modified. Damaged or modified batteries may exhibit unpredictable behaviour resulting in fire, explosion or risk of injury.

Do not expose a battery pack or tool to fire or excessive temperature. Exposure to fire or temperature above 265 °F (130 °C) may cause explosion.

Follow all charging instructions and do not charge the battery pack or tool outside the temperature range specified in the instructions. Charging improperly or at temperatures outside the specified range may damage the battery and increase the risk of fire.

Disconnect the battery pack from the tool before making any adjustments, changing accessories, or storing the tool. Such preventive safety measures reduce the risk of starting the tool accidentally.

Do not modify or attempt to repair the tool or the battery pack except as indicated in the instructions for use and care.

Work area safety

Keep work area clean and well lit. Cluttered or dark areas invite accidents.

DO NOT operate the laser tool around children or allow children to operate the laser tool. Serious eye injury could result.

DO NOT use laser tools, attachments and accessories outdoors when lightning conditions are present.

Do not operate the laser tool in explosive environments, such as in the presence of flammable liquids, gases or dusts. Sparks can be created in the laser tool which may ignite the dust or fumes.

Electrical safety

WARNING

Batteries can explode or leak, cause injury or

fire. To reduce this risk, always follow all instructions and warnings on the battery label and package.

DO NOT short any battery terminals.

DO NOT charge alkaline batteries.

DO NOT mix old and new batteries. Replace all of them at the same time with new batteries of the same brand and type.

DO NOT mix battery chemistries.

Dispose of or recycle batteries per local code.

DO NOT dispose of batteries in fire.

Keep batteries out of reach of children.

Remove batteries if the device will not be used for several months.

WARNING

Risk of fire and burns. Do not open, crush or (70°C) or incinerate.

Personal safety

If laser radiation strikes your eye, you must deliberately close your eyes and immediately turn your head away from the beam.

Do not make any modifications to the laser equipment.

Stay alert, watch what you are doing and use common sense when operating a tool. Do not use a tool while you are tired or under the influence of drugs, alcohol or medication. A moment of inattention while operating a tool may result in serious personal injury or incorrect measurement results.

General Safety Rules

Use safety equipment. Always wear eye protection. Safety equipment such as dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate conditions will reduce personal injuries.

Use caution when using laser tools in the vicinity of electrical hazards.

Magnets

Keep the magnetic accessories away from implants or other medical devices such as pacemaker or insulin pumps. The magnets generate a field that can impair the function of implants or medical devices, which may lead to serious personal injury.

Keep the tool, positioning device, and laser target plate away from magnetic data medium and magnetically-sensitive equipment. The effect of the magnets of the tool and laser target plate can lead to irreversible data loss.

Use and care

Use the correct tool for your application. The correct tool will do the job better and safer.

Do not use the tool if the switch does not turn it on and off. Any tool that cannot be controlled with the switch is dangerous and must be repaired.

Store idle tool out of the reach of children and do not allow persons unfamiliar with the tool or these instructions to operate the tool. Tools are dangerous in the hands of untrained users.

Maintain tools. Check for misalignment or binding of moving parts, breakage of parts and any other condition that may affect the operation. If damaged, have the tool repaired before use. Many accidents are caused by poorly maintained tools.

Use the tool, accessories, etc., in accordance with these instructions and in the manner intended for the particular type of tool, taking into account the working conditions and the work to be performed. Use of the tool for operations different from those intended could result in a hazardous situation.

Service

Have your tool serviced by a qualified repair person using only identical replacement parts. This will ensure that the safety of the tool is maintained.

Develop a periodic maintenance schedule for tool. When cleaning a tool be careful not to disassemble any portion of the tool since internal wires may be misplaced or pinched or may be improperly mounted. Certain cleaning agents such as gasoline, carbon tetrachloride, ammonia, etc. may damage plastic parts.

FCC Caution

The manufacturer is not responsible for radio interference caused by unauthorized modifications to this equipment. Such modifications could void the user's authority to operate the equipment.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and

2. This device must accept any interference received, including interference that may cause undesired operation.

NOTE! This device generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the

SAVE THESE INSTRUCTIONS

FCC Caution

interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and the receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

ISED Canada

This device contains license-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada's license-exempt RSS(s). Operation is subject to the following two conditions:

1. this device may not cause interference, and
2. this device must accept any interference, including interference that may cause undesired operation of the device.

Intended Use

The laser tool is intended for determining and checking horizontal and vertical lines (GLL100-42G and GCL165-42G) and plumb

points (GCL165-42G only). The laser tool is suitable for indoor use.

Symbols

Important: Some of the following symbols may be used on your tool. Please study them and learn their meaning. Proper interpretation of these symbols will allow you to operate the tool better and safer.

Symbol Designation/Explanation
V Volts (voltage)
A Amperes (current)
Hz Hertz (frequency, cycles per second)
W Watt (power)
ft Feet (length)
in Inches (length)
m meters (length)
mm millimeters (length)
lb Pounds (weight)
kg Kilograms (weight)
min Minutes (time)
s Seconds (time)
F Fahrenheit (temperature)
C Celsius (temperature)
---	Direct current (type or a characteristic of current)
	This symbol indicates magnetic field in place.
	Alerts user to laser radiation.
	Alerts user to read manual.
	Alerts user to wear eye protection.

Symbols

Important: Some of the following symbols may be used on your tool. Please study them and learn their meaning. Proper interpretation of these symbols will allow you to operate the tool better and safer.

Symbol Designation/Explanation
	Designates Li-ion battery recycling program.
	This symbol designates that this tool is listed by the Canadian Standards Association, to United States and Canadian Standards.
	This symbol designates that the tool complies with FCC Rules.

Getting to Know Your Line Laser

Fig. 1

Fig. 2

1 Battery Status Indicator

2 Button for Laser Operating Mode

3 On/Off Switch

4 Exit Opening for Laser Beam

Getting to Know Your Line Laser

Fig. 3
GLL100-42G and GCL165-42G

5 Charge Indicator of the Lithium-Ion Battery Pack*
6 Latch of the Lithium-Ion Battery Pack/Battery Adapter*
7 USB Type-C® Port*

8 Laser Warning Label
9 Battery Adapter
10 Lithium-Ion Battery Pack*
11 Tripod Mount 1/4"
12 Serial Number

Technical Data

Line Laser GLL100-42G GCL165-42G
Article number 3601K65610 3601K66R10
Working range (typical)1
• Visible laser line 100 ft (30 m) 100 ft (30 m)
• Laser line with optional laser receiver2	- 15-330 ft (5-100 m)
• Laser points - 50 ft (15 m)
Leveling accuracy (typical)345
• Laser lines	±1/8 in. at 30 ft(±0.3 mm/m)	±1/8 in. at 30 ft(±0.3 mm/m)
• Laser points -		±9/32 in. at 30 ft(±0.7 mm/m)
Self-leveling range (typical) ±4°	±4°
Leveling duration (typical) < 4 s < 4 s
Operating temperature	14°F to 113°F(-10°C to +45°C)	14°F to 113°F(-10°C to +45°C)
Storage temperature	-4°F to 158°F(-20°C to +70°C)	-4°F to 158°F(-20°C to +70°C)
Max. altitude 6,562 ft (2000 m)	6,562 ft (2000 m)
Relative air humidity, max.	90%	90%
Laser class	2	2
Pollution degree according to IEC 61010-16	2	2
Laser lines
• Laser type	< 10mW, 500-540 nm	< 10mW, 500-540 nm
• C6	10	10
• Divergence	50 x 10 mrad (full angle)	50 x 10 mrad (full angle)
Laser point
• Laser type	-	<1mW, 500-540 nm
• C6	-	1
• Divergence	-	0.8 mrad (full angle)
Compatible laser receiver	-	LR8
Tripod mount	1/4"	1/4"
Laser tool power supply
• Battery pack (lithium-ion)	3.7 V ---	3.7 V ---
• Batteries (alkali-mangane)	4 x 1.5 V LR6 (AA)	4 x 1.5 V LR6 (AA)

Technical Data

Line Laser GLL100-42G GCL165-42G
Degree of Protection IP65 IP65
Lithium-ion Battery Pack (optional)
Type GBA37V30 GBA37V30
Article number 1600A031G4 1600A031G4
USB port USB Type-C® USB Type-C®
Recommended USB Type-C® cable	1605A002XH 1605A002XH
Rated voltage 3.7 V 3.7 V	---	---
Input voltage	5.0 V=5.0 V	---
Capacity	3.0 Ah	3.0 Ah
Recommended ambient temperature during charging	50°F to 95°F(+10° to +35°C)	50°F to 95°F(+10° to +35°C)
Permitted ambient temperature during storage	14°F to 113°F(-10°C to +45°C)	14°F to 113°F(-10°C to +45°C)
USB-C Cable
Article number 1605A002XH 1605A002XH
Rated voltage 5.0 V 5.0 V	---	---
Capacity	2.0 A max	2.0 A max
Power Adapter (optional)
Recommended power adapter	Output rated 5V---, 2A	Output rated 5V---, 2A

1. The working range can be decreased by unfavorable environmental conditions (e.g. direct sun irradiation).
2. Maximum receiver range is measured at the horizontal line.
3. At 68-77°F (20-25°C).
4. The values stated presuppose normal to favorable environmental conditions (e.g. no vibration, no fog, no smoke, no direct sunlight). Extreme fluctuations in temperature can cause deviations in accuracy.
5. An additional deviation of ±0.004 in/m ( ±0.1 mm/m) must be taken into account when at maximum self-leveling range.
6. Only non-conductive deposits occur, whereby occasional temporary conductivity caused by condensation is expected.

The laser tool can be clearly identified with the Serial Number 12 on the nameplate.

Preparation

Laser Tool Power Supply

(Fig. 4)

The tool can either be operated with the Bosch rechargeable Lithium-Ion Battery Pack 10 outlined in "Technical Data" on page 11 or commercially available LR6 (AA) batteries (optional).

Operation with Bosch Rechargeable Lithium-Ion Battery Packs

(Fig. 4)

WARNING Follow all warnings and all instructions in the Bosch rechargeable lithium-ion battery pack manual before using the battery pack.

Improper usage and recharge of battery pack may increase the risk of fire, personal injury and property damage.

WARNING Use only Bosch rechargeable lithium-ion battery

packs listed in the technical data section of this manual. Use of other battery packs may increase the risk of fire, personal injury and property damage

WARNING Remove the batteries from the tool when not

using it for extended periods. When storing for extended periods, the batteries can corrode and self-discharge.

WARNING Use only Bosch USB-C cable listed in the tech-

nical data section of this manual. Use of other USB-C cables may increase the risk of fire, personal injury and property damage.

Note: The Lithium-Ion Battery Pack 10 is supplied partially charged. To ensure full capacity of the battery pack, completely charge the battery pack with the USB power

adapter (recommended) listed in "Technical Data" on page 11 before using for the first time. See Bosch rechargeable lithium-ion battery pack manual for details.

The Lithium-Ion Battery Pack 10 is protected against deep discharge by the Electronic Cell Protection (ECP). A protective circuit switches the laser level off when the battery is drained.

Following the automatic shutoff of the tool, do not continue to slide the On/Off switch 3 to OFF and ON.

To insert the lithium-ion battery, place the Lithium-Ion Battery Pack 10 in the laser tool. Turn the Latch of the Lithium-Ion Battery Pack 6 90° clockwise to rotate the Lithium-Ion Battery Locking Mechanism 30. This will lock the battery into place. Push down on the Latch 6 so it lays flush against the battery pack and does not interfere with operation.

To remove the Lithium-Ion Battery Pack 10, pull up the Latch of the Lithium-Ion Battery Pack 6 and turn it 90° counterclockwise. Take the lithium-ion battery pack out of the laser tool.

Charging the Lithium-Ion Battery Pack

(Fig. 4)

• For charging, a USB power supply unit whose output voltage and output current comply with the requirements in "Technical Data" on page 11.
• Pay attention to the mains voltage. The voltage of the power source must match the voltage specified on the type plate of the power supply.
• Only use the USB connection to charge the battery at an ambient temperature of between +50°F and +95°F (+10 °C and +35 °C). Charging outside of this temperature range can damage the battery and increase the risk of fire.

Note: Lithium-ion rechargeable batteries are supplied partially charged according to international transport regulations. To ensure full rechargeable battery capacity, fully charge the Lithium-Ion Battery Pack 10 before using your tool for the first time.

Preparation

Open the flap for the USB Type-C® Port 7. Connect the USB port to a USB power supply unit using the USB Type-C® Cable 18. Connect the USB power supply unit to the mains supply.

Remove the USB Type-C Cable 18 after completing the charging process. Close the flap for the USB Type-C® Port 7 to protect it from dust and splashes.

LED Status Cause Corrective Action
Off Charging	cable not connected Connect charging cable.
Green Full charge -
Yellow Charging -
Red Wrong charging voltage Use only power adapter and USB C cable listed in "Technical Data" on page 11 to charge the Bosch battery pack.
Blinking green/yellow	Charging temperature too high	Charge battery pack in temperatures above +50°F (+10°C) and below +95°F (35°C).
	Other charging error	Have battery pack checked by Authorized Bosch Service Center or Service Station.

Operation with LR6 (AA) Batteries (optional)

(Fig. 5)

It is recommended that you use alkaline manganese batteries to operate the laser tool.

Put the non-rechargeable batteries into the Battery Adapter 9. When inserting the non-rechargeable batteries, ensure that the polarity is correct according to the illustrations on the side and front interior of the battery adapter.

Always replace all the batteries at the same time. Only use batteries from the same manufacturer and which have the same capacity.

To insert the Battery Adapter 9, place the Battery Adapter 9 in the laser tool. Turn the

Latch of the Battery Adapter 6 90° clockwise to rotate the Lithium-Ion Battery Locking Mechanism 30. Push down on the Latch 6 so it lays flush against the Battery Adapter 9 and does not interfere with operation.

To remove the Battery Adapter 9, pull up the Latch of the Battery Adapter 6 and turn it 90° counterclockwise. Take the Battery Adapter 9 out of the laser tool.

Remove the batteries from the laser tool when not using it for extended periods. When storing for extended periods, the batteries can corrode and discharge themselves.

Battery Status Indicator

(Fig. 1)

The Battery Status Indicator 1 shows the current state of charge of the lithium-ion battery pack/non-rechargeable batteries when the laser tool is switched on.

If the Lithium-Ion Battery Pack 10 or non-rechargeable batteries are running low, the laser lines will gradually become dimmer.

If the Lithium-Ion Battery Pack 10/non-rechargeable batteries are almost empty, the Battery Status Indicator 1 will flash continuously. The laser lines will flash for 5 seconds every 5 minutes.

Preparation

If the Lithium-Ion Battery Pack 10/non-rechargeable batteries are empty, the laser lines and the Battery Status Indicator 1 will flash one last time before the laser tool switches off.

Operation

Initial Operation

• Protect the laser tool from moisture and direct sunlight.
• Do not expose the laser tool to any extreme temperatures or fluctuations in temperature. The precision of the laser tool may be compromised if exposed to extreme temperatures or fluctuations in temperature. For example, do not leave it in a car for extended periods of time. If it has been subjected to significant fluctuations in temperature, first allow the laser tool to adjust to the ambient temperature and then always carry out an accuracy check before continuing work. (See “Accuracy Check of the Laser Tool” on page 17.)
• Avoid substantial knocks to the laser tool and avoid dropping it. Always carry out an accuracy check before continuing work if the laser tool has been subjected to severe external influences. (See "Accuracy Check of the Laser Tool" on page 17.)
• Switch the laser tool off when transporting it. The pendulum unit is locked when the tool is switched off, as it can otherwise be damaged by extreme movements.

Switching On and Off

To switch on the laser tool, slide the On/Off Switch 3 to the ON position. Immediately after switching on, the laser tool sends a laser line out of the Exit Opening for Laser Beam 4.

To switch off the laser tool, slide the On/Off Switch 3 to the Off position. The pendulum unit is locked when the tool is switched off.

If the maximum permitted operating temperature is exceeded, the laser lines will flash rapidly before the laser tool switches off. Once it has cooled down, the laser tool is operational again and can be switched back on.

Automatic Shut-Off

If no button on the laser tool is pressed for approx. 120 min, the laser tool will automatically switch itself off to preserve battery life. To switch the laser tool back on after it has been automatically switched off, you can either slide the On/Off Switch 3 to the "OFF" position first and then switch the laser tool back on, or press the Button for Laser Operating Mode 2.

To deactivate the automatic shut-off function, hold down one of the Buttons for Laser Operating Mode 2 for at least 3 s (with the laser tool switched on). If the automatic shutoff function is deactivated, the laser beams will flash briefly as confirmation.

To activate the automatic shut-off function, switch the laser tool off and on again.

Operating Modes

The laser tool has four operating modes, which you can toggle through with the Button for Laser Operating Mode 2:

• Cross-line: The laser tool generates a horizontal and a vertical laser line facing forwards. The laser lines cross at a 90° angle.
• Horizontal operation: The laser tool generates a horizontal laser line.
• Vertical operation: The laser tool generates a vertical laser line. If the laser tool is positioned in a room, the vertical laser line is displayed on the ceiling beyond the upper laser point.
• Point mode (GCL165-42G only): The laser tool generates two vertical laser points – one facing up, the other down.

Note: Cross-line operation is available with point mode in the GCL165-42G. When activated, the laser tool generates a horizontal and a vertical laser line facing forwards as well as two vertical laser points – one facing up, the other down.

To change the operating mode, press the Button for Laser Operating Mode 2 as often as required until the laser beams are generated in the required operating mode.

All operating modes apart from point mode can be used with both automatic leveling and the incline function.

Point mode, alone or in combination with cross-line mode, is available only on the GCL165-42G.

Operation

Automatic Leveling

The laser tool monitors the position at all times during operation. It works with automatic leveling during set-up within the self-leveling range of ±4^ . Outside of the self-leveling range, it will automatically switch to the incline function.

Working With Automatic Leveling

Position the laser tool on a level, firm surface or attach it to the Magnetic Mount 13 or the Tripod 24.

The automatic leveling function automatically compensates irregularities within the self-leveling range of ±4^ . Once the laser beam is permanently lit, the laser tool has leveled in.

If automatic leveling is not possible, e.g. because the surface on which the laser tool stands deviates by more than 4^ from the horizontal plane, the laser lines will initially flash quickly for 2 seconds, then quickly flash every 5 seconds several times. The laser tool is in the incline function.

In case of ground vibrations or position changes during operation, the laser tool is automatically leveled again. Upon leveling, check the position of the laser beams with regard to the reference points to avoid errors arising from a change in the laser tool's position.

Working with the Incline Function

Place the laser tool on an inclined surface. When working with the incline function, the laser lines will initially flash quickly for 2 seconds, then quickly flash every 5 seconds several times.

In the incline function, the laser lines and plumb point are no longer leveled and no longer necessarily run perpendicular to one another.

Accuracy Check of the Laser Tool

Influences on Accuracy

The ambient temperature has the greatest influence. Especially temperature differences occurring from the ground upward can refract the laser beam.

Since the largest difference in temperature layers is close to the ground, you should always mount the laser tool on a Tripod 24 for measuring distances of 65 ft (20 m) or more. In addition, position the laser tool in the center of the work surface, wherever this is possible.

In addition to external influences, device-specific influences (e.g. falls or heavy impacts) can also lead to deviations. For this reason, check the leveling accuracy each time before beginning work.

First check the height accuracy and leveling accuracy of the horizontal laser line, then the leveling accuracy of the vertical laser line.

Should the laser tool exceed the maximum deviation during one of the tests, please have it repaired by a Bosch aftersales service.

Checking the Height Accuracy of the Horizontal Line

(Fig. 6, Fig. 7, Fig. 8, Fig. 9)

For this check, you will need a free measuring distance of 16 ft (5 m) on firm ground between two walls (designated A and B).

1. Mount the laser tool close to wall A on a tripod, or place it on a firm, level surface. Switch on the laser tool and select cross-line operation.
2. Aim the laser at the closer wall A and allow the laser tool to level in. Mark the middle of the point at which the laser lines cross on the wall (point 1).
3. Turn the laser tool 180°, allow it to level in and mark the point where the laser lines cross on the opposite wall B (point II).
4. Position the laser tool – without rotating it – close to wall B, switch it on and allow it to level in.
5. Align the height of the laser tool (using the tripod or by placing objects underneath as required) so that the point where the laser lines cross exactly hits the previously marked point II on wall B.
6. Turn the laser tool 180° without adjusting the height. Aim it at wall A such that the vertical laser line runs through

Operation

the already marked point I. Allow the laser tool to level in and mark the point where the laser lines cross on wall A (point III).

1. The discrepancy d between the two marked points I and III on wall A reveals the actual height deviation of the laser tool.

The maximum permitted deviation on the measuring distance of 2 × 16 ft = 32 ft ( 2 × 5 m = 10 m) is as follows:

32 ft x ±0.0036 in/ft = ±1/8 in (0.115 in)

(10 m × ±0.3 mm/m = ±3 mm)

The discrepancy d between points I and III must therefore amount to no more than 1/8 in (3 mm).

Checking the Level Accuracy of the Horizontal Line

(Fig. 10, Fig. 11)

For this check, you will need a free area of 16 x 16 ft (5 x 5 m).

1. Mount the laser tool in the middle between walls A and B on a Tripod 24, or place it on a firm, level surface. Switch on the laser tool and select horizontal operation. Allow the laser tool to level in.

2. At a distance of 8 ft (2.5 m) from the laser tool, mark the center of the laser line on both walls (point I on wall A and point II on wall B).

3. Set up the laser tool at a 16 ft (5 m) distance, rotate it by 180°, and allow it to level in.

4. Align the height of the laser tool (using the Tripod 24 or by placing objects underneath as required) so that the center of the laser line exactly hits the previously marked point II on wall B.

5. Mark the center of the laser line on wall A as point III (vertically above or below point I).

Operation

1. The discrepancy d between the two marked points I and III on wall A reveals the actual horizontal deviation of the laser tool.

The maximum permitted deviation on the measuring distance of 2 × 16 ft = 32 ft ( 2 × 5 m = 10 m) is as follows:

$$ 3 2 \mathrm{ft} x \pm 0. 0 0 3 6 \mathrm{in} / \mathrm{ft} = 1 / 8 \text {in} (0. 1 1 5 \mathrm{in}) $$

$$ (1 0 \mathrm{m} \times \pm 0. 3 \mathrm{mm} / \mathrm{m} = \pm 3 \mathrm{mm}) $$

The discrepancy d between points I and III must therefore amount to no more than 1/8 in (3 mm).

Checking the Level Accuracy of the Vertical Line

(Fig. 12, Fig. 13)

For this check, you will need a door opening (on solid ground) which has at least 8 ft (2.5 m) of space on either side of the door.

1. Place the laser tool 8 ft (2.5 m) away from the door opening on a firm, flat

surface (not on a tripod). Switch on the laser tool and select vertical operation. Aim the laser line at the door opening and allow the laser tool to level in.

1. Mark the center of the vertical laser line on the floor of the door opening (point I), 16 ft (5 m) away on the other side of the door opening (point II), and on the upper edge of the door opening (point III).

2. Rotate the laser tool 180° and position it on the other side of the door opening, directly behind point II. Allow the laser tool to level in and align the vertical laser line in such a way that its center passes through points I and II exactly.

3. Mark the center of the laser line on the upper edge of the door opening as point IV.

The discrepancy d between the two marked points III and IV reveals the actual vertical deviation of the laser tool.

Operation

1. Measure the height of the door opening.

You can calculate the maximum permitted deviation as follows:

doubled height of the door opening × 0.0036 in/ft (0.3 mm/m)

Example: At a door opening height of 6.5 ft (2 m), the maximum deviation amounts to 2 × 6.5 ft × ±0.0036 in/ft = 0.047 in (2 × 2 m × ±0.3 mm/m = ±1.2 mm).

The points III and IV must therefore be no further than 0.047 in (1.2 mm) from each other.

Checking Plumb Accuracy (GCL165-42G only)

(Fig. 14, Fig. 15)

For this check, you will need a clear measuring space on firm ground with a distance of approx. 16 ft (5 m) between the floor and the ceiling.

1. Mount the laser tool onto the Rotating Mount 19 and place it on the floor. Select point mode and allow the laser tool to level in.
2. Mark the center of the top laser point on the ceiling (point I). Also mark the center of the bottom laser point on the floor (point II).
3. Turn the laser tool by 180°. Position it so that the center of the bottom laser point falls onto the marked point II. Allow the laser tool to level in. Mark the center of the top laser point (point III).
4. The discrepancy d between the two marked points I and III on the ceiling reveals the actual deviation of the laser tool from the vertical plane.

You can calculate the maximum permitted deviation as follows:

Doubled distance between floor and ceiling × 0.0084 in/ft (0.7 mm/m)

Example: At a floor-to-ceiling distance of 16 ft (5 m), the maximum deviation amounts to 2 × 16 ft x 0.0084 in/ft = 0.27 in. The points I and III must therefore be no further than 0.27 in from each other.

Working Advice

Always use the center of the laser line for marking. The width of the laser line changes with the distance.

Operation

Use with Attachments

Working with the RM 10 Rotating Mount (optional accessory)

(Fig. 3, Fig. 16 - Fig. 21)

You can use the Rotating Mount 19 to rotate the laser tool 360° around a central, always visible plumb point. This enables you to set up the laser lines precisely, without having to change the position of the laser tool.

You can use the Rotating Mount Fine Adjustment Knob 20 to align vertical laser lines precisely with reference points.

Place the laser tool with the Guide Grooves 21 on the Rotating Mount Guide Rails 22, and slide the laser tool all the way onto the Rotating Mount Platform 23.

To disconnect the laser tool, pull it off the Rotating Mount 19 in the opposite direction.

Positioning possibilities of the Rotating Mount 19:

• Standing on a flat surface,
- Screwed to a vertical surface,
- On metallic surfaces using the Magnets 14,
- On ceiling grids using the Ceiling Clip 17.

Roughly align the Rotating Mount 19 before switching on the laser tool.

Fig. 16

Exterior view of a mechanical device with mounting bracket and side mount (no text or symbols visible)

Illustration of a tripod-mounted camera with labeled base (24) and top (BT 150), no other text or symbols present.

Technical illustration of a mechanical component with a cylindrical rod and two separate parts (no text or symbols)

Operation

3D rendered image of two different bathroom fixtures, one with a screw and the other with a screw (no text or symbols visible)

Mechanical component with warning symbol and label (Fig. 21), no readable text or symbols beyond labels

3D rendered image of a mechanical device with no visible text or symbols

22

Operation

Working with the Magnetic Mount LB 10 (Optional Accessory)

(Fig. 3, Fig. 16, Fig. 22, Fig. 23, Fig. 24)

You can secure the laser tool on vertical surfaces or magnetizable materials using the Magnetic Mount 13. In conjunction with the Ceiling Clip 17, the laser tool can also be aligned vertically.

Place the laser tool with the Tripod Mount 1/4" 11 on the Magnetic Mount 1/4" Screw 15 and screw it tight.

Attachment options for the Magnetic Mount 13:

- Using a commercially available fastening screw, it can be attached via the Magnetic Mount Screw Hole 16 to wood.

• Using the Magnets 14, it can be attached to magnetizable materials.
- Using the Ceiling Clip 17, it can be attached to ceiling grids.

Note: Use only DK20. Use of DK10 will provide insufficient support and may cause the tool to fall.

Keep your fingers away from the rear side of the magnetic accessory while attaching the accessory to surfaces. The strong pulling force of the magnets may jam your fingers.

Roughly align the Magnetic Mount 13 before switching on the laser tool.

Operation

Working with the DK20 Ceiling Clip (Optional Accessory)

(Fig. 16, Fig. 25)

WARNING Make sure that this device and the tool are securely mounted before operation.

The DK20 Ceiling Clip 17 can be attached to ceiling grids for use with a magnetic mount:

1. Slide the magnetic mount into position on the DK20 Ceiling Clip 17. The magnetic mount may require minor adjustments to sit in the track of the DK20 Ceiling Clip 17.

2. Squeeze the handle to open the clip of the DK20 17. Attach the DK20 Ceiling Clip 17 to the ceiling grid.

3. Roughly align the magnetic mount and DK20 Ceiling Clip 17 before switching on the laser tool.

4. Turn on the laser tool.
5. Use the adjustment knob of the DK20 Ceiling Clip 17 to align laser lines precisely with reference points.

Rotate the adjustment knob of the DK20 Ceiling Clip 17 clockwise to move the magnetic mount higher and counterclockwise to lower it.

Working with the Laser Target Plate (Optional Accessory)

(Fig. 16, Fig. 26)

The Laser Target Plate 28 increases the visibility of the laser beam under unfavorable conditions and at large distances.

24

Operation

The reflective part of the Laser Target Plate 28 improves the visibility of the laser line.

Thanks to the transparent part, the laser line is also visible from the back side of the laser target plate.

Working with the Tripod (Optional Accessory)

(Fig. 16, Fig. 27, Fig. 28, Fig. 29)

A Tripod 24 offers a stable, height-adjustable support. Position the tool with the Tripod Mount 1/4" 11 onto the thread of the Tripod 24 or a commercially available camera tripod.

Working with the Laser Receiver (Optional Accessory)

(Fig. 16)

Use the Laser Receiver 29 to improve detection of the laser lines in adverse lighting conditions (bright environment, direct sunlight) and over greater distances.

Laser Viewing Glasses (Optional Accessory)

(Fig. 16)

The Laser Viewing Glasses 27 filter out the ambient light. This makes the light of the laser appear brighter for the eyes.

- Do not use the Laser Viewing Glasses 27 as safety goggles. The Laser Viewing Glasses 27 are used for improved visu-

alization of the laser beam, but they do not protect against laser radiation.

- Do not use the Laser Viewing Glasses 27 as sunglasses or in traffic. The laser viewing glasses do not afford complete UV protection and reduce color perception.

Technical line drawing of a mechanical assembly or mounting bracket with no visible text or symbols

Operation

3D architectural rendering of a room with walls, cubes, and a camera on a tripod (no text or symbols)

Illustration of a camera on a tripod inside a tiled room, no text or symbols present

Illustration of a robotic arm interacting with a staircase, no text or symbols present

26

Maintenance and Service

Store and transport the tool only in the supplied protective case.

Keep the tool clean at all times.

Do not immerse the tool into water or other fluids.

Wipe off debris using a moist and soft cloth. Do not use any cleaning agents or solvents.

Regularly clean the surfaces at the exit opening of the laser in particular, and pay attention to any fluff or fibers.

If the tool should fail despite the care taken in manufacturing and testing procedures, repair should be carried out by an authorized after-sales service center for Bosch power tools.

In all correspondence and spare parts orders, please always include the 10-digit article number given on the type plate of the tool.

Environment Protection

Simple line drawing of a trash bin with crossed lines indicating no waste or restriction (no text or symbols)

Recycle raw materials and batteries instead of disposing of waste. The unit, accessories, packaging and used batteries should be sorted for environmentally friendly recycling in accor-

dance with the latest regulations.

Maintenance et service. 52

Line laser: < 10 mW, 500-540 nm

Laser Radiation. Do not stare into the beam. Class 2 Laser product. • Radiación láser. No mire al rayo.

Line laser: < 10 mW, 500-540 nm

Dot laser: < 1 mW, 500-540 nm

Laser Radiation. Do not stare into the beam. Class 2 Laser product. • Radiación láser. No mire al rayo.

This device contains license-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada's license-exempt RSS(s). Operation is subject to the following two conditions:

1. this device may not cause interference, and
2. this device must accept any interference, including interference that may cause undesired operation of the device.

Utilisation prévue

Important: Some of the following symbols may be used on your tool. Please study them and learn their meaning. Proper interpretation of these symbols will allow you to operate the tool better and safer.

32 pi x ±0.0036 po/pi = ±1/8 po (0.115 po) (10 m × ±0.3 mm/m = ±3 mm)

Exterior view of a mechanical device with mounting flanges and a central knob (no text or symbols visible)

17 DK20

RM 10

LR8

Line drawing of a tripod-mounted camera with adjustable arm and legs (no text or symbols)

24 BT 150

Illustration of three mechanical components: a cylindrical device, a small clamp or clip, and a vertical rod (no text or symbols)

25 BT 350

3D model of a gray plastic enclosure or housing component with a small inset detail, labeled with number 9 (no text or symbols on the object itself)

Battery Adapter

3D illustration of a rectangular electronic device with a labeled component (no text or symbols beyond the number 10)

GBA37V30

Close-up of a black USB cable with a labeled end point (18), no text or symbols on the cable itself.

Charging Cable

Fonctionnement

3D rendered mechanical parts including a battery and a toilet, shown in two views (no text or symbols)

3D rendered image of a mechanical device with no visible text or symbols on its body, labeled 'Fig. 19' in the top-left corner.

Fonctionnement

Technical line drawing of a mechanical assembly or mounting bracket with no visible text or symbols

50

Fonctionnement

3D rendering of a room with a camera on a tripod, showing internal partitioning and no text or symbols

Illustration of a camera mounted on a tripod in a tiled room, no text or symbols present

Illustration of a robotic arm interacting with a staircase, no text or symbols present

Symbol of a trash bin crossed with no text or labels

Exterior view of a mechanical device with mounting flanges and a central knob (no text or symbols visible)

Illustration of a tripod-mounted camera with labeled base (24) and top (BT 150), no other text or symbols present.

Technical illustration of a mechanical component with a cylindrical rod and two separate parts (no text or symbols)

Operation

3D rendered mechanical component with two views: one showing a labeled component and the other a close-up of a bracket (no text or symbols visible)

3D mechanical component with warning symbol and label (Fig. 21), no readable text or symbols beyond labels

3D rendered mechanical component with mounting bracket and base plate, labeled Fig. 19 (no text or symbols on the object itself)

72

Operation

Technical line drawing of a mechanical assembly or mounting bracket with no visible text or symbols

Operation

3D architectural rendering of a room with walls, cubes, and a camera on a tripod (no text or symbols)

Illustration of a camera on a tripod inside a tiled room, no text or symbols present

Illustration of a robotic arm interacting with a staircase and metal railings (no text or symbols)

76

Simple line drawing of a trash bin with two crossed lines indicating no waste or prohibition (no text or symbols)

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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

STM32CubeG0, v1.5.1

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Copyright © 2018-2021 STMicroelectronics.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.

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Copyright © 2015, Texas Instruments Incorporated

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Redistributions must preserve existing copyright notices and reproduce this license (including the above copyright notice and the disclaimer and (if applicable) source code license limitations below) in the documentation and/or other materials provided with the distribution.

Redistribution and use in binary form, without modification, are permitted provided that the following conditions are met:

• No reverse engineering, decompilation, or disassembly of this software is permitted with respect to any software provided in binary form.
  — Any redistribution and use are licensed by TI for use only with TI Devices.
• Nothing shall obligate TI to provide you with source code for the software licensed and provided to you in object code.

If software source code is provided to you, modification and redistribution of the source code are permitted provided that the following conditions are met:

— Any redistribution and use of the source code, including any resulting derivative works, are licensed by TI for use only with TI Devices.
— Any redistribution and use of any object code compiled from the source code and any resulting derivative works, are licensed by TI for use only with TI Devices.
— Neither the name of Texas Instruments Incorporated nor the names of its suppliers may be used to endorse or promote products derived from this software without specific prior written permission.

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THIS SOFTWARE IS PROVIDED BY TI AND TI'S LICENSORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL TI AND TI'S LICENSORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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Copyright © 2016 Texas Instruments Incorporated – http://www.ti.com/

All rights reserved not granted herein. Limited License.

Texas Instruments Incorporated grants a world-wide, royalty-free, non-exclusive license under copyrights and patents it now or hereafter owns or controls to make, have made, use, import, offer to sell and sell ("Utilize") this software subject to the terms herein. With respect to the foregoing patent license, such license is granted solely to the extent that any such patent is necessary to Utilize the software alone. The patent license shall not apply to any combinations which include this software, other than combinations with devices manufactured by or for TI ("TI Devices"). No hardware patent is licensed hereunder.

Redistributions must preserve existing copyright notices and reproduce this license (including the above copyright notice and the disclaimer and (if applicable) source code license limitations below) in the documentation and/or other materials provided with the distribution.

Redistribution and use in binary form, without modification, are permitted provided that the following conditions are met:

• No reverse engineering, decompilation, or disassembly of this software is permitted with respect to any software provided in binary form.
  — Any redistribution and use are licensed by TI for use only with TI Devices.
• Nothing shall obligate TI to provide you with source code for the software licensed and provided to you in object code.

If software source code is provided to you, modification and redistribution of the source code are permitted provided that the following conditions are met:

— Any redistribution and use of the source code, including any resulting derivative works, are licensed by TI for use only with TI Devices.
- Any redistribution and use of any object code compiled from the source code and any resulting derivative works, are licensed by TI for use only with TI Devices.
— Neither the name of Texas Instruments Incorporated nor the names of its suppliers may be used to endorse or promote products derived from this software without specific prior written permission.

DISCLAIMER.

THIS SOFTWARE IS PROVIDED BY TI AND TI'S LICENSORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL TI AND TI'S LICENSORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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LIMITED WARRANTY

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