Bosch GLL40-20G Green-Beam Self-Leveling Cross-Line Laser


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In stock

The Bosch GLL40-20G Self-Leveling Cross-Line Laser projects visible green laser lines, which are up to 2X brighter than standard red beams. The tool has a working range of up to 40 Ft. and offers reliable accuracy of +5/6 in. at 30 Ft. It features Bosch-exclusive VisiMax™ technology, which monitors tool temperature and power consumption to deliver the brightest line for the job, optimized energy efficiency and long-term tool reliability. The cross-line laser is also equipped with a Smart Pendulum System allowing for automatic self-leveling and indication of out-of-level condition, as well as pendulum lock for safe tool transport. The included MM 2 Flexible Mounting Device provides a rotating 360° neck for quick setup and simple fine-tuning allowing for the laser to be clamped onto virtually any surface from 1/2 In. to 2-1/4 In. thick.

SKU: GLL40-20G Category: Tag:
  • Accuracy: ±5/16” @ 30 ft
  • Battery Voltage (V): 1.5
  • Height: 3.2″
  • Laser Diode: Class 2, 500-540 nm
  • Length: 3.2″
  • Leveling Type: Self-Leveling, Up to 4°
  • Material: Plastic composite
  • Mount Threading: 1/4-20
  • Operating Temperature: 41° F / 5° C ~ 104° F / 40° C
  • Range: Up to 40-ft.
  • Weight: 0.5lb
  • Width: 2.3


  • Compact 40 Ft. cross-line laser design – features green beams for visibility, self-leveling technology for accuracy and VisiMax for brightness
  • VisiMax technology – delivers maximum beam brightness, optimized energy efficiency, and long-term tool reliability
  • Bright green-beam laser lines — up to 4X brighter than standard red beams
  • Cross-line mode – projects two bright lines that are precisely level and plumb, for a wide array of leveling and alignment applications
  • MM 2 Flexible Mounting Device – clamps to multiple surfaces and provides a rotating 360° neck for quick setup and simple fine-tuning
  • Smart Pendulum System – self-levels and indicates an out-of-level condition
  • Secure transport – pendulum locks when switched off to help ensure long tool life
  • Ergonomic, compact and lightweight – easy to use and easy to store
  • Features 1/4 In.-20 In. tripod thread – for use with MM 2 mount or tripod


  • (1) GLL40-20G Green-Beam Self-Leveling Cross-Line Laser
  • (1) MM 2 Flexible Mounting Device
  • (1) Pouch
  • (2) AA Batteries

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