GKS 12V26 Professional - Saw BOSCH - Free user manual and instructions

USER MANUAL GKS 12V26 Professional BOSCH

word mark and logos are registered trade- marks owned by Bluetooth SIG, Inc. and any use of such marks by Robert Bosch Power Tools GmbH is under li- cense. Safety instructions for chargers u This charger is not intended for use by children or persons with physical, sensory or mental limita- tions or a lack of experience or knowledge. This charger can be used by children aged 8 or older and by persons who have physical, sensory or mental limitations or a lack of experience or knowledge if a person responsible for their safety supervises them or has in- structed them in the safe opera- tion of the charger and they under- stand the associated dangers. Oth- erwise, there is a risk of operating er- rors and injuries. u Supervise children during use, cleaning and maintenance. This will ensure that children do not play with the charger. Do not expose the charger to rain or wet condi- tions. Water entering a power tool will increase the risk of electric shock. u Charge the measuring tool only with the supplied charger. u Keep the charger clean. Dirt poses a risk of electric shock. u Always check the charger, cable and plug before use. Stop using the charger if you discover any damage. Do not open the charger yourself, and have it repaired only by a qualified specialist using only original re- placement parts. Damaged chargers, cables and plugs increase the risk of electric shock. u Do not operate the charger on an easily ignited sur- face (e.g. paper, textiles, etc.) or in a flammable envir- onment. There is a risk of fire due to the charger heating up during operation. u In case of damage and improper use of the battery, va- pours may also be emitted. Ensure the area is well-vent- ilated and seek medical attention should you experience any adverse effects. The vapours may irritate the respirat- ory system. Product Description and Specifications Please unfold the fold-out page with the diagram of the measuring tool and leave it open while reading the instruc- tion manual. Intended Use The measuring tool is intended for measuring distances, lengths, heights, clearances and inclines, and for calculating areas and volumes. The measurement results can be transferred to other devices via Bluetooth® and USB port. The measuring tool is suitable for indoor and outdoor use. Product features The numbering of the product features shown refers to the il- lustration of the measuring tool on the graphic page. (1) Display (2) Measuring button [ ] (can be used at the front or side) English | 23 Bosch Power Tools 1 609 92A 4F4 | (22.10.2018)24 | English 1 609 92A 4F4 | (22.10.2018) Bosch Power Tools (3) Soft key [ ] (4) Plus button [+] / Select to the right (5) Zoom button (6) Carrying strap lug (7) Measuring pin release button (8) Measuring pin (9) On/off/delete button [ ] (10) Camera button (11) Minus button [–] / Select to the left (12) Soft key [ ] (13) Function button [Func] (14) Laser warning label (15) Serial number (16) Micro USB port (17) 1/4" tripod socket (18) Laser beam output (19) Camera (20) Reception lens (21) Carrying strap (22) Micro USB cable (23) Charger

Accessories shown or described are not included with the product as standard. You can find the complete selection of accessories in our accessories range. Display elements (a) Result line (b) Target display (crosshairs) (c) Display tilt angle (d) Date/time (e) Reference level of measurement (f) Connection status Bluetooth® not activated Bluetooth® activated, connection estab- lished (g) Battery charge indicator (h) Measured value lines (i) Settings (soft key) (j) Selected measuring function (k) Internal memory (soft key) (l) Integrated help function (soft key) (m) Back (soft key) (n) Start screen (soft key) (o) Tool settings Technical data Digital laser measure GLM 120 C Article number 3 601 K72 F.. Measuring range (typical) 0.08–120 m

Measuring range (typical, unfavourable conditions) 0.08–60 m

Measuring accuracy (typ- ical) ±1.5 mm

Measuring accuracy (typ- ical, unfavourable condi- tions) ±3.0 mm

Smallest display unit 0.5 mm Indirect distance measurement and level Measuring range 0°–360° (4 x 90°) Grade measurement Measuring range 0°–360° (4 x 90°) Measuring accuracy (typ- ical) ±0.2° C)D)E) Smallest display unit 0.1° General Operating temperature –10 °C to +45 °C

Storage temperature –20 °C to +70 °C Permitted charging temper- ature range +5°C to +40°C Relative air humidity max. 90% Max. altitude 2000 m Pollution degree according IEC61010-1

Laser class 2 Laser type 650 nm, < 1 mW Laser beam diameter (at 25 °C) approx. – 10m distance 9mm – 100m distance 90mm Automatic switch-off after approx. – Laser 20 s – Measuring tool (without measurement) 5 min

Weight according to EPTA- Procedure 01:2014

Operating frequency band 2402–2480 MHz Max. transmission power 8 mWDigital laser measure GLM 120 C Micro USB cable USB 2.0 – Charging voltage 5.0 V – Charge current 1000 mA Battery Li-ion Rated voltage 3.6 V Capacity 3120 mAh Number of battery cells 1 Charger Article number

Charging time Approx. 5.5 h

Battery charging voltage 5.0 V Charge current 1000 mA Protection class / II A) For measurements from the front edge of the measuring tool, this applies for high reflectivity of the target (e.g. a white- painted wall), weak backlighting and 25°C operating temperat- ure. In addition, a deviation of ±0.05mm/m must be taken into account. B) For measurements from the front edge of the measuring tool, this applies for high reflectivity of the target (e.g. a white- painted wall), and strong backlighting. In addition, a deviation of ±0.15 mm/m must be taken into account. C) After calibration at 0° and 90°. Additional pitch error of max. ±0.01°/degrees up to 45°. The measurement accuracy refers to the three orientations of the inclination measurement calibra- tion, see figure H D) At an operating temperature of 25 °C. Charging time with 1A USB charger. Faster charging with the measuring tool switched off. E) The left-hand side of the measuring tool serves as the reference level for grade measurement. F) In continuous measurement mode, the max. operating temper- ature is +40 °C. G) non-conductive soiling only, whereby occasional temporary conductivity caused by condensation is expected H) The automatic switch-off time can be adjusted (to two, five, ten minutes or never).

I) When using Bluetooth® Low Energy devices, it may not be pos-

sible to establish a connection depending on the model and op- erating system. Bluetooth® tools must support the GATT profile. A long battery runtime is achieved by means of energy-saving meas- ures, such as deactivating the Bluetooth® function when not required, reducing the display brightness, etc. The serial number (15) on the type plate is used to clearly identify your measuring tool. Initial start-up Charging the battery u Use only the chargers listed in the technical data. Only these chargers are matched to the lithium-ion battery of your measuring tool. u The use of chargers from other manufacturers can lead to defects on the measuring tool; a higher voltage (e.g. 12 V) from a vehicle charger is not suitable for charging this measuring tool. The warranty is rendered void if these instructions are not followed. u Pay attention to the mains voltage. The voltage of the power source must match the voltage specified on the rating plate of the charger. Note: The battery is supplied partially charged. To ensure full capacity of the battery, completely charge the battery before the first use. Note: The micro USB port (16) for connecting the micro USB cable (22) is located under the cover of the measuring pin (8). Press the release button (7) to open the cover. The lithium-ion battery can be charged at any time without reducing its service life. Interrupting the charging process does not damage the battery. If the lower segment of the battery charge indicator (g) flashes, only a few more measurements can be made. Charge the battery. If the frame around the segments of the battery charge indic- ator (g) flashes, no more measurements are possible. The measuring tool can only be used for a short time (e.g. to check entries in the measured value list). Charge the bat- tery. Connect the measuring tool to the charger (23) using the mi- cro USB cable (22) provided. Plug the charger (23) into the socket. The charging process will begin. The battery charge indicator (g) indicates the charging pro- gress. The segments flash successively during charging. When all segments of the battery charge indicator (g) are displayed, the battery is fully charged. If you are not planning to use the power tool again soon, dis- connect the charger from the mains. The battery can also be charged at a USB port. To do so, con- nect the measuring tool to a USB port using the micro USB cable. In USB mode (charging mode, data transfer), the charging time can be noticeably longer. The measuring tool cannot be used on its own during the charging process. Bluetooth® switches itself off during the charging process. Existing connections to other devices are interrupted. Data can be lost in the process. Recommendations for optimal handling of the battery in the measuring tool Only charge the measuring tool in the permissible temperat- ure range, (see "Technical data", page24). As an example, do not leave the measuring tool in a vehicle during the sum- mer. A significantly reduced operating time after charging indic- ates that the battery has deteriorated and must be replaced by the Bosch after-sales service. Follow the instructions on correct disposal. Operation Start-Up u Never leave the measuring tool unattended when switched on, and ensure the measuring tool is switched off after use. Others may be dazzled by the laser beam. English | 25 Bosch Power Tools 1 609 92A 4F4 | (22.10.2018)26 | English 1 609 92A 4F4 | (22.10.2018) Bosch Power Tools u Protect the measuring tool from moisture and direct sunlight. u Do not expose the measuring tool to any extreme tem- peratures or variations in temperature. For example, do not leave it in a car for extended periods of time. In case of large variations in temperature, allow the measur- ing tool to adjust to the ambient temperature before put- ting it into operation. The precision of the measuring tool may be compromised if exposed to extreme temperat- ures or variations in temperature. u Avoid substantial knocks to the measuring tool and avoid dropping it. Always carry out an accuracy check before continuing work if the measuring tool has been subjected to severe external influences Accuracy Check of the Measuring Tool. u The measuring tool is equipped with a wireless inter- face. Local operating restrictions, e.g. in aeroplanes or hospitals, must be observed. Switching On/Off During work, ensure that the reception lens (20), the laser beam output (18) and the camera (19) are not closed off or covered, otherwise correct measurement will not be pos- sible. – To switch on the measuring tool and the laser, briefly press the front or side measuring button (2) [ ]. – To switch on the measuring tool without the laser, briefly press the on/off/delete button (9) [ ]. u Do not direct the laser beam at persons or animals and do not stare into the laser beam yourself (even from a distance). To switch off the laser, briefly press the on/off/delete but- ton (9) [ ]. To switch off the camera, press the camera button (10). To switch off the measuring tool, press and hold the on/off/ delete button (9) [ ]. The measured values and device settings in the memory are retained when you switch the measuring tool off. Camera Switching on the measuring tool automatically switches on the camera (19). To switch it off, press the camera button (10). For larger distances (of approx. more than five metres), a target marker is also superimposed to mark the measuring point. Optimising visibility of the laser point Especially when using the measuring tool outdoors, in sun- light and also over long distances indoors, the laser point may not be visible. The visibility of the laser point/measure- ment point can additionally be improved in order to connect the camera by: – Setting the display brightness (tool settings) – Using the zoom by pressing the button (5). Measuring process Once switched on, the measuring tool is in the length meas- urement function. For a different measuring function, press the button (13) [Func]. Use the button (4) [+] or the button (11) [–] to select the required (see "Measuring functions", page28). Activate the measuring function with the button (13) [Func] or with the measuring button (2) [ ]. Once the measuring tool has been switched on, the rear edge of the measuring tool is selected as the reference level for measurement. Changing the reference level (see "Select- ing the reference level (see figureA)", page26). Apply the measuring tool to the point at which you want to start the measurement (e.g. wall). Note: If the measuring tool has been switched on using the on/off/delete button (9) [ ], briefly press the measuring button (2) [ ] to switch the laser on. To initiate the measurement, briefly press the measuring button (2) [ ]. Then the laser beam is switched off. For a further measurement, repeat this process. With the laser beam continuously switched on and when in the continuous measurement function, the measurement be- gins the first time you press the measuring button (2) [ ]. u Do not direct the laser beam at persons or animals and do not stare into the laser beam yourself (even from a distance). Note: The measured value typically appears within half a second, and no later than approximately four seconds. The duration of the measurement depends on the distance, the lighting conditions and the reflective properties of the target surface. Upon completion of the measurement, the laser beam is automatically switched off. The continuously switched-on laser beam is not switched off after the meas- urement (see "Continuous laser beam", page27). Selecting the reference level (see figureA) You can choose between four different reference levels for the measurement: – The rear edge of the measuring tool (e.g. when placing against walls) – The tip of the measuring pin (8) folded by 180° (e.g. when measuring from a corner) – The front edge of the measuring tool (e.g. when measur- ing from a table edge) – The centre of the thread (17) (e.g. for tripod measure- ments) The folding out and in of the measuring pin (8) by 180° is de- tected automatically and the appropriate reference level is suggested. Confirm the setting by pressing the measuring button (2) [ ]. Select the settings for the measuring tool using the soft key (3) [ ]. Use the button (4) [+] or the button (11) [–] to select the reference level and confirm this by pressing the button (13) [Func]. The rear edge of the measuring tool is automatically preset as the reference level every time the measuring tool is switched on.Continuous laser beam If necessary, you can switch the measuring tool to continu- ous laser beam operation. To do this, select the settings for the measuring tool using the soft key (3) [ ]. Use the but- ton (4) [+] or the button (11) [–] to select the continuous laser beam and confirm this by pressing the button (13) [Func]. u Do not direct the laser beam at persons or animals and do not stare into the laser beam yourself (even from a distance). In this setting, the laser beam remains switched on even between measurements; measurement simply requires one brief press of the measuring button (2) [ ]. The continuous laser beam can be switched off again in the settings or automatically when the measuring tool is switched off. Settings menu To enter the settings menu (i), briefly press the soft key (3) [ ] or press and hold the button (13) [Func]. Use the button (4) [+] or the button (11) [–] to select the required setting and confirm this by pressing the button (13) [Func]. Select the required setting. To exit the settings menu, press the on/off/delete button (9) [ ] or the soft key (12) [ ]. Settings Bluetooth® Reference level Timer function Continuous laser beam Grade measurement calibration Target indicator calibration Internal memory (deleting and formatting) Tool settings Timer function The timer function is useful when measuring in hard-to-reach areas, for example, or when the measuring tool should be kept stationary during measurement. Select the timer function in the settings. Select the required time period between triggering the timer and starting meas- urement and confirm by pressing the measuring button (2) [ ] or the button (13) [Func]. Then press the measuring button (2) [ ] to switch on the laser beam and focus on the target. Press the measuring but- ton (2) [ ] again to start the measurement. The measure- ment will begin after the set time period has expired. The measured value is displayed in the result line (a). The time period between triggering the timer and starting measurement is displayed in the status bar at the top. Continuous measurement and minimum/maximum measure- ment are not possible with the timer function enabled. The timer remains enabled until the measuring tool is switched off or until the timer is switched off in the settings menu. Tool settings menu Select the tool settings menu in the settings menu. Use the button (4) [+] or the button (11) [–] to select the required tool setting and confirm this by pressing the button (13) [Func]. Select the required tool settings. To exit the tool settings menu (o), press the on/off/delete button (9) [ ] or the soft key (12) [ ]. Tool settings Language Time & date ft/m Unit of measurement Unit of measurement for angles TrackMyTools Tool information Tone signals Switch-off time Dimmer Display brightness Display orientation Setting the language Select the language option in the tool settings menu. Set the required language and confirm this by pressing the button (13) [Func]. Setting the date and time Select the time & date option in the tool settings menu. Set the date and time according to the instructions on the dis- play and confirm these by pressing the soft key (12) [ ]. Changing the unit of measurement Select the unit of measurement option in the tool settings menu. The default unit of measurement is m (metres). Set the required unit of measurement and confirm this by pressing the button (13) [Func]. To exit the menu item, press the on/off/delete button (9) [ ] or the soft key (3) [ ]. The selected tool settings remain saved after you switch off the measuring tool. Changing the unit of measurement of an angle Select the option for setting the unit of measurement for angles in the tool settings menu. The default unit of measure- ment for an angle is ° (degrees). Set the required unit of measurement for angles and confirm this by pressing the button (13) [Func]. English | 27 Bosch Power Tools 1 609 92A 4F4 | (22.10.2018)28 | English 1 609 92A 4F4 | (22.10.2018) Bosch Power Tools To exit the menu item, press the on/off/delete button (9) [ ] or the soft key (3) [ ]. The selected tool settings remain saved after you switch off the measuring tool. TrackMyTools Select the TrackMyTools option in the tool settings menu. Confirm the setting by pressing the button (13) [Func]. Initial activation is required. Data can only be transmitted us- ing a suitable app or computer program. TrackMyTools can be deactivated again at any time. Display illumination Select the dimmer option in the tool settings menu. The display illumination is continuously switched on. If you do not press any buttons, the display lighting is dimmed after approximately 30seconds to preserve the battery. The time until dimming starts can be adjusted (tool settings). The brightness of the display can be adjusted to the sur- rounding conditions in multiple increments (tool settings). Measuring functions Note: Integrated help function Help in the form of an animation is saved in the measuring tool for each measuring function. To access this, select the button (13) [Func], the button (4) [+] or button (11) [−] and then the soft key (3) [ ]. The animation shows you the detailed procedure for the selected measuring function. The animation can be stopped and started again at any time using the soft key (3) [ ]. You can scroll forwards and backwards using the button (4) [+] and button (11) [−]. Measuring length Select the length measurement mode . To switch on the laser beam, briefly press the measuring but- ton (2) [ ]. To measure, briefly press the measuring button (2) [ ]. The measured value will be shown at the bottom of the display.

Repeat the above-mentioned steps for each subsequent measurement. The last measured value is at the bottom of the display, the penul- timate measured value is above it, and so on. Continuous measurement In continuous measurement mode, the measuring tool can be moved relative to the target, during which the measured value will be updated every half a second. You can, for ex- ample, move a desired distance away from a wall while read- ing off the current distance at all times. Select the continuous measurement mode . To switch on the laser beam, briefly press the measuring but- ton (2) [ ]. Move the measuring tool until the required distance value is shown in the display below.

Briefly pressing the measuring button (2) [ ] will interrupt the continuous measurement. The current measured value will be shown at the bottom of the display. The maximum and minimum measured value appear above it. Pressing the measuring button (2) [ ] once more will start the continuous measurement again. Continuous measurement automatically switches off after fiveminutes. Area measurement Select the area measurement mode . Then measure the width and length and height one after the other as with a length measurement. The laser beam remains switched on between the two measurements. The distance to be measured flashes in the indicator for area measure- ment (see indicator element (j)).

The first measured value is shown at the top of the display. After the second measurement has been com- pleted, the area will be automatically calcu- lated and displayed. The end result is shown at the bottom of the display, while the individual measured values are shown above it. Volume measurement Select the volume measurement mode . Then measure the width, length and depth one after the other as with a length measurement. The laser beam remains switched on between the three measurements. The distance to be measured flashes in the indicator for volume measure- ment (see display element (j)).

The first measured value is shown at the top of the display. After the third measurement has been com- pleted, the volume will be automatically calcu- lated and displayed. The end result is shown at the bottom of the display, while the individual measured values are shown above it. Indirect distance measurement Select the indirect distance measurement mode . There are four measuring functions available for the indirect dis- tance measurement, each of which is capable of determining different distances. The indirect distance measurement is used to determine dis- tances that cannot be measured directly, due to an obstacle that would impede the path beam or the absence of a target surface that could serve as a reflector. This measuring pro- cedure can only be employed vertically. Any horizontal devi- ation will lead to measurement errors. Note: Indirect distance measurement is always less accurate than direct distance measurement. For application-related reasons, measuring errors can be greater than with direct distance measurement. To improve the accuracy of meas- urement, we recommend the use of a tripod (accessory). The laser beam remains switched on between the individual measurementsa) Indirect height measurement (see figureB) Select the indirect height measurement mode . Ensure that the measuring tool is at the same height as the lower measuring point. Then tilt the measuring tool around the reference level and measure distance 1 as for a length measurement (displayed as a red line).

Once the measurement is complete, the result for the required distance X is displayed in the result line (a). The measured values for dis- tance 1 and angle α can be found in the meas- ured value lines (h). b) Double indirect height measurement (see figureC) The measuring tool can indirectly measure all distances that lie in the vertical level of the measuring tool. Select the double indirect height measurement mode . Measure dis- tances 1 and 2 in succession as for a length measurement.

Once the measurement is complete, the result for the required distance X is displayed in the result line (a). The measured values for dis- tances 1 and 2 and angle α can be found in the measured value lines (h). Ensure that the reference level for the meas- urement (e.g. the rear edge of the measuring tool) remains in exactly the same place for all the individual measurements in a single measuring process. a) Indirect length measurement (see figureD) Select the indirect length measurement mode . Ensure that the measuring tool is at the same height as the required measuring point. Then tilt the measuring tool around the reference level and measure distance 1 as for a length measurement.

Once the measurement is complete, the result for the required distance X is displayed in the result line (a). The measured values for dis- tance 1 and angle α can be found in the meas- ured value lines (h). d) Trapezium measurement (see figureE) The trapezium measurement can be used to determine the length of a roof slope, for example. Select the trapezium measurement . Measure distances 1, 2 and 3 in succession as for a length measurement. Ensure that the measurement of distance 3 begins exactly at the point where distance 1 ends and that distances 2 and 3 are at right angles to distance 1.

Once the final measurement is complete, the result for the required distance X is displayed in the result line (a). The individual measured values can be found in the measured value lines (h). Wall area measurement (see figureF) The wall area measurement is used to determine the sum of multiple individual areas with a common height. In the illus- trated example, the total area of several walls that have the same ceiling height H but different lengths L is to be determ- ined. Select the wall area measurement mode . Measure the ceiling height H as for a length measurement. The measured value is displayed in the top measured-value line. The laser remains switched on.

Then measure the length L

of the first wall. The area is automatically calculated and dis- played in the result line (a). The last measured value for length can be found in the bottom measured value line (h). The laser remains switched on. Now measure the length L

of the second wall. The individual measured value displayed in the measured value line (h) is added to the length L

. The sum of the two lengths (dis- played in the middle measured value line (h)) is multiplied by the saved height H. The total area value is displayed in the result line (a). You can measure any number of lengths L

, which will be automatically added and multiplied by the height H. The re- quirement for a correct area calculation is that the first measured length (for example the ceiling height H) is identical for all sub-areas. Stake out function (see figureG) The stake out function repeatedly measures a defined length (distance). These lengths can be transferred to a surface, for example to enable material to be cut into pieces of equal lengths or to install stud walls in a drywall construction. The minimum adjustable length is 0.1 m and the maximum length is 50 m. Note: The distance from the marking is shown in the display in the stake out function. The reference is not the edge of the measuring tool. Select the stake out function . Use the button (4) [+] or the button (11) [–] to set the re- quired length. Begin the stake out function by pressing the measuring but- ton (2) [ ] and slowly move away from the starting point. m0.483 0.500m 0.81x The measuring tool continuously measures the distance to the starting point. The defined length and the current measured value are thereby displayed. The lower or upper arrow displays the shortest distance to the next or last marking. Note: When measuring continuously, you can set a meas- ured value as a defined length by pressing the measuring button (2) [ ]. m0.500 0.500m1x The left factor specifies how many times the defined length has already been reached. The green arrows on either side of the display in- dicate the reaching of a length for marking pur- poses. Red arrows or red text indicate the actual value when the ref- erence is outside of the display. English | 29 Bosch Power Tools 1 609 92A 4F4 | (22.10.2018)30 | English 1 609 92A 4F4 | (22.10.2018) Bosch Power Tools Grade measurement/digital spirit level Select the inclination measurement/digital spirit level . The measuring tool automatically switches between two states. 1° 2° 3° The digital spirit level is used to check the hori- zontal or vertical alignment of an object (e.g. washing machine, refrigerator, etc.). When the inclination exceeds 3°, the ball in the display lights up red. The bottom of the measuring tool is used as the reference level for the digital spirit level. 88.0° Grade measurement is used to measure a slope or incline (e.g. of stairs, railings, when fitting furniture, laying pipes, etc.). The left-hand side of the measuring tool serves as the reference level for grade measurement. If the display flashes during measurement, the measuring tool has been tipped too heavily to the side. Memory functions The value or end result of each completed measurement is automatically saved. Tip: When the camera is switched on, the photo is saved automatically, together with the measuring result. The fol- lowing information is printed on the photo: – Measuring result – Individual measurements (required to determine the measuring result) – Measuring function used – Reference – Date and time – Tilt angle (only with spirit level switched on). If the photo is intended to be used for documentation pur- poses and transferred via micro USB cable, we recommend disabling the zoom function. When the measuring tool is connected to an end device by micro USB cable, a csv file with all saved measured values is additionally created. Memory value display A maximum of 50values (measured values or photos with measured values) can be retrieved. Select the memory function using the soft key (12) [ ] .

The number of the memory value is shown at the top of the display, the corresponding memory value and the corresponding measur- ing function are shown at the bottom Press the button (4) [+] to browse forwards through the saved values. Press the button (11) [–] to browse backwards through the saved values. If there is no value available in the memory, 0.000 is shown at the bottom of the display and 0 at the top. The oldest value is located in position 1 in the memory, while the newest value is in position 50 (when 50 memory values are available). When a further value is saved, the oldest value in the memory is always deleted. Deleting the memory To open the memory, press the soft key (12) [ ]. Then press the soft key (3) [ ] as often as required to delete the content of the memory. To delete all values stored in the memory, the function from the settings menu can also be used. This is then confirmed by pressing the soft key (12)

Formatting the memory The USB memory can be reformatted (e.g. in the event of storage problems). To do this, select the function from the settings menu and confirm this by pressing the soft key (12) [ ]. Formatting deletes all data stored in the memory. The USB memory must not be formatted using other devices (e.g. external PC). Adding/subtracting values Measured values or end results can be added or subtracted. Adding values The following example describes the addition of areas: De- termine an area as described in the section on area measure- ment (see "Area measurement", page28).

Press the button (4) [+]. The calculated area and the + symbol will be displayed. Press the measuring button (2) [ ] to start another area measurement. Measure the area as described in the section on area measurement (see "Area measurement", page28). Once the second measurement is completed, the result of the second area measurement is displayed below. To show the end result, press the measuring button (2) [ ] once more. Note: In the case of a length measurement, the end result is displayed immediately. Subtracting values To subtract values, press the button (11) [–]. The sub- sequent steps are the same as for the section on adding val- ues. Deleting measured values Briefly pressing the on/off/delete button (9) [ ] will delete the last measured value in all measuring functions. Bluetooth® interface Transmitting data to other devices The measuring tool is fitted with a Bluetooth® module which enables wireless data transfer to certain mobile devices with a Bluetooth® interface (e.g. smartphone, tablet). Information about the system requirements for a Bluetooth® connection can be found on the Bosch website at www.bosch‑pt.com u Further information can be found on the Bosch product page. When transmitting data by means of Bluetooth®, time lags may occur between the mobile device and the measuring tool. This can be due to the distance between the two devices or the measurement object itself.Activating the Bluetooth® interface for transmitting data to a mobile device The Bluetooth® interface is activated in the settings. To activ- ate the Bluetooth® signal, press the button (4) [+]. Ensure that the Bluetooth® interface is activated on your mobile device. The Bosch Measuring Master app is specially designed to ex- tend the range of functions of the mobile device and make data easier to process. This can be downloaded from the re- spective store of the device. The connection between the mobile device and the measur- ing tool is established after the Bosch application has star- ted. If multiple active measuring tools are found, select the appropriate measuring tool using the serial number. You can find the serial number (15) on your measuring tool's type plate. The connection status, as well as the active connection (f), are shown in the display (1) of the measuring tool. Deactivating the Bluetooth® interface The Bluetooth® connection is deactivated in the settings. To deactivate the Bluetooth® signal, press the button (11) [–] or switch off the measuring tool. USB port Data transfer via USB port Data can be transferred from the measuring tool to certain devices with a USB port (e.g. computer, notebook) via its micro USB connection. Connect the measuring tool to your computer or notebook using the micro USB cable. The operating system on your computer or notebook will automatically recognise the measuring tool as a drive. Note: When the measuring tool is connected to a computer or notebook via the micro USB cable, the Li-ion battery will charge. The charging time varies according to the charging current. Practical advice u Further information can be found on the Bosch product page. u The measuring tool is equipped with a wireless inter- face. Local operating restrictions, e.g. in aeroplanes or hospitals, must be observed. General advice The reception lens (20), the laser beam output (18) and the camera (19) must not be covered during measurement. The measuring tool must not be moved while a measurement is being taken. For this reason, place the measuring tool against or on a firm surface whenever possible. Influences on the measuring range The measuring range depends on the lighting conditions and the reflective properties of the target surface. For better vis- ibility of the laser beam in strong extraneous light, use the in- tegrated camera (19), the laser viewing glasses (26) (ac- cessory) and the laser target plate (25) (accessory) or shade the target area. Influences on the measurement result Due to physical effects, the possibility of inaccurate meas- urements when measuring various surfaces cannot be ex- cluded. These include: – Transparent surfaces (e.g. glass, water) – Reflective surfaces (e.g. polished metal, glass) – Porous surfaces (e.g. insulating materials) – Structured surfaces (e.g. roughcast, natural stone). If necessary, use the laser target plate (25) (accessory) on these surfaces. Inaccurate measurements are also possible where the laser is pointed at target surfaces diagonally. Layers of air at different temperatures and indirectly re- ceived reflections can also influence the measured value. Checking accuracy and calibrating the grade measurement (see figureH) Regularly check the accuracy of the grade measurement. This is accomplished by means of a reverse measurement. To do this, lay the measuring tool on a table and measure the inclination. Turn the measuring tool by 180° and measure the inclination again. The difference between the displayed values must not exceed 0.3°. In case of greater deviation, the measuring tool must be re- calibrated. To do so, select in the settings. Follow the directions on the display. We recommend that you perform an accuracy check and if necessary a calibration of the measuring tool after extreme temperature variations and after impact to the tool. After a temperature variation, the measuring tool must acclimatise for a while before calibration is performed. Accuracy check of the distance measurement You can check the accuracy of the measuring tool as follows: – Choose a measuring section of approx. 3 to 10 m in length that is permanently unchanged, the exact length of which is known to you (e.g. room width, door opening). The measurement should be performed under favourable conditions, i.e. the measuring section should be indoors with weak backlighting and the target area of the meas- urement should be smooth and reflect well (e.g. a white- painted wall). – Measure the section ten times in succession. The deviation of the individual measurements from the mean value must not exceed ±2mm over the entire measuring sec- tion in favourable conditions. Record the measurements in order to be able to compare the accuracy later on. English | 31 Bosch Power Tools 1 609 92A 4F4 | (22.10.2018)32 | English 1 609 92A 4F4 | (22.10.2018) Bosch Power Tools Checking accuracy and calibrating the target indicator (crosshairs) Check the accuracy of the alignment of the laser and target indicator on a regular basis. – Select a bright area at least five metres away with as little illumination as possible (e.g. a white wall) as the target. – Check whether the laser point is inside the target indic- ator in the display. If the laser point is not inside the target indicator, you must recalibrate the target indicator. To do so, select in the settings. Follow the directions on the display. Working with the tripod (accessory) The use of a tripod is particularly necessary for larger dis- tances. Place the measuring tool with the 1/4" thread (17) on the quick-release plate of the tripod (27) or a conven- tional camera tripod. Tighten it using the locking screw of the quick-release plate. Set the reference level for measurements with a tripod in the settings (tripod reference level). Errors – Causes and Corrective Measures Cause Corrective measures Temperature warning flashes, measurement not pos- sible The measuring tool is outside the operating temperature of –10 °C to +45 °C (in the con- tinuous measurement func- tion, up to +40 °C). Wait until the measuring tool has reached operating tem- perature. Display shows "ERROR" Addition/subtraction of measured values with vari- ous units of measurement. Only add/subtract measured values with the same units of measurement. Angle between laser beam and target is too acute. Increase the angle between the laser beam and the tar- get. Target surface is too reflect- ive (e.g. mirror) or not re- flective enough (e.g. black material), or ambient light is too bright. Use the laser target plate (25). The laser beam output (18), reception lens (20) or cam- era (19) are fogged up (e.g. due to a rapid temperature change). Wipe the laser beam output (18), reception lens (20) or camera (19) dry with a soft cloth. Calculated value is larger than +1,999,999 or smaller than -999,999 m

1 A-USB 5,0 V ) (1000 mA / II