GLL 50 G Professional - Laser pointer BOSCH - Free user manual and instructions
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| Product type | Laser level (cross-line laser) |
| Brand | Bosch |
| Model | GLL 50 G Professional |
| Laser class | Class 2 |
| Laser wavelength | 510 – 530 nm (green) |
| Working range | Up to 50 m (depending on ambient lighting) |
| Leveling accuracy | ±0.3 mm/m |
| Self-leveling range | ±4° |
| Operating time | Up to 10 hours (alkaline batteries) |
| Power supply | 3 x 1.5 V AA (LR6) batteries |
| Dimensions (W x D x H) | Approx. 120 x 60 x 80 mm |
| Weight (with batteries) | Approx. 0.35 kg |
| Tripod thread | 1/4 inch |
| Ingress protection | IP54 (dust and splash proof) |
| Main functions | Horizontal and vertical laser lines, self-leveling, compact design |
| Care and cleaning | Wipe with a soft, dry cloth; do not use cleaning agents or solvents |
| Safety | Never look directly into the laser beam; do not point at people or animals |
| Spare parts | Use only original Bosch spare parts |
| Repairability | Repairs must be carried out by Bosch authorized service centers |
Frequently Asked Questions - GLL 50 G Professional BOSCH
What is the working range of the Bosch GLL 50 G Professional?
The Bosch GLL 50 G Professional has a working range of up to 50 meters depending on ambient lighting conditions. In bright sunlight, the range decreases; in darker interiors, it works at full distance.
Is the GLL 50 G self-leveling?
Yes, the device is self-leveling within a range of ±4°. Once placed on a flat surface, it automatically levels itself and projects stable horizontal and vertical lines. If the tilt exceeds this range, the laser stops projecting.
What batteries does the GLL 50 G use and how long do they last?
It runs on 3 x 1.5V AA (LR6) batteries. With alkaline batteries, you can expect up to 10 hours of continuous operation. Rechargeable batteries may have varying performance.
Can I use the GLL 50 G outdoors?
Yes, the IP54 protection makes it resistant to dust and splashes. However, the green laser is highly visible outdoors, but the working range may be reduced in bright sunlight. For best outdoor results, use it in shaded areas or with a laser detector.
How do I calibrate the GLL 50 G?
The self-leveling system calibrates the laser automatically each time you switch it on. Wait a few seconds until the lines become stable. If you suspect accuracy issues, compare the lines against a reference level and contact the Bosch service center if adjustment is needed.
Is the laser beam safe for the eyes?
The device is classified as Class 2 laser with power below 1 mW. It is safe for momentary exposure, but never look directly into the beam and do not aim it at other people or animals. Prolonged direct exposure can be harmful.
What is the advantage of a green laser?
The green laser (wavelength 510–530 nm) is up to 4 times more visible to the human eye than red lasers at the same power. This makes the lines easier to see in bright conditions and over longer distances.
How do I attach the GLL 50 G to a tripod?
The device has a 1/4-inch tripod thread on the bottom. Screw the laser onto the tripod screw or use a mounting adapter to secure it. This is ideal for precise leveling at a fixed height.
What does IP54 mean for the Bosch GLL 50 G?
The IP54 rating means the device is protected against dust (5) and splashing water (4) from any direction. It can withstand light rain and construction dust, but it is not waterproof and should not be submerged.
How should I care for and clean the device?
Keep the lens clean and scrape off dust with a soft brush. Wipe the housing with a soft, dry cloth. Do not use solvents or cleaning agents. Store the laser in its protective pouch when not in use.
User questions about GLL 50 G Professional BOSCH
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USER MANUAL GLL 50 G Professional BOSCH
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Product information
Brand : BOSCH
Model : GLL 50 G Professional
Category : Laser pointer