Power Tools for Professionals



Green-Beam Self-Leveling 360° Cross-Line Laser

The Bosch GLL50-40G Green-Beam Self-Leveling 360° Cross-Line Laser uses green-beam technology, which emits green lines up to 4X brighter than standard red beams. This gives the laser a working range of up to 100 Ft. in diameter. The laser produces vertical line, 360° horizontal plane and cross-line modes, for a broad array of alignment and leveling applications. It provides 360° coverage to level with one setup point for an entire room. The tool has full rubber overmold housing, designed to be similar to a roll cage, so major impact points are reinforced with rubber. It has an IP64 rating and features deeply recessed windows help protect the laser glass. The one-button onboard user interface allows easy selection among the layout modes. The two-position recessed switch provides additional protection of the switch mechanism. The Bosch Smart Pendulum System self-levels and indicates out-of-level condition, and it locks the pendulum for secure transport. The included LB10 L-Bracket and DK10 ceiling clip offer quick setup and extra-strong magnets.

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  • (1) GLL50-40G Green-Beam Self-Leveling 360° Cross-Line Laser
  • (1) LB10 L-Bracket
  • (1) DK10 Ceiling Clip
  • (4) AA Batteries
  • (1) Hard Carry Case


  • Versatile layout – vertical line and 360° horizontal plane can be projected separately or together for a variety of applications
  • 360° coverage – level with one setup point for an entire room at a working range of 100 Ft. in diameter
  • Bright green-beam laser — up to 4X brighter than standard red beams
  • Full rubber overmold housing – helps to protect major impact points, with a design similar to a roll cage
  • Smart Pendulum System – allows tool to self-level, and it indicates out-of-level condition
  • Secure laser transport – after switching off, pendulum is locked
  • One-button onboard user interface – easily select among the vertical line, 360° horizontal plane and cross line layout modes
  • Two-position recessed switch – provides additional protection of the switch mechanism
  • LB10 L-Bracket – provides fast setup and extra-strong magnets
  • DK10 Ceiling grid clip – provides easy setup in ceiling-grid applications
  • Jobsite-tough construction – withstands rainy or dusty jobsite conditions, and is IP64 rated
  • Battery gauge – features a three-LED indicator for battery management

Technical Data

Height 4.69"
IP Rating IP 64
Laser Beam Color Green
Laser Diode Class 2, 500-540 nm
Length 4.37"
Leveling Type Self-Leveling, Up to 4°
Material Plastic composite
Mount Threading 1/4-20
Operating Temperature 23° F / -5° C ~ 104° F / 40° C
Range Up to 100-ft.
Weight 1.37lb
Width 2.83"
Works With Tripods
BT 150
Telescoping Pole System
Grade Rods
GR 16, GR500
Mounts and Positioning Devices
BM 1, BM3, LB10
Includes (1) GLL50-40G Green-Beam Self-Leveling 360° Cross-Line Laser, (1) LB10 L-Bracket, (1) DK10 Ceiling Clip, (4) AA Batteries, (1) Hard Carry Case
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Owner's Manual


Accessories and Attachments For GLL50-40G

Levels/Leveling Rods
Pole System
Positioning Devices/Ceiling Clips


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