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Model#: BSHNGPL4

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Bosch GPL4 4-Point Self-Leveling Alignment Laser

  • Bosch GPL4 4-Point Self-Leveling Alignment Laser
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Bosch's GPL4 4-Point Self-Leveling Alignment Laser is the ideal tool for a variety of leveling and layout applications, projecting four laser points toward level, plumb up, plumb down and square. The GPL4 features a durable water and dust proof housing for dependable operation and sure grip, easy access battery compartment for quick battery changes, built-in heavy-duty magnets for mounting to metal surfaces, an auto out-of level sensor that indicates out-of-level conditions and integrated reference lines for accurate positioning of the tool and transfer points.
  • 4-Point laser projects toward level, plumb up, plumb down and square for accurate alignment and layout
  • Integrated reference lines for precise positioning of tool and transfer of points
  • Automatic out-of-level sensing displays blinking points to indicate out-of-level condition
  • Easy access battery compartment
  • Multi-mount allows you to position and mount with magnets, strap or threaded mounts (1/4-20, 5/8-11)
  • Over-the-track application design allows you to accurately transfer and align points with built-in heavy-duty magnets that mount to any metal surface
  • Dual mode On/Off switch - 3-point and 4-point mode selection for versatile applications
  • Robust and ergonomic over-molded housing is water and dust proof to ensure years of dependable operation
  • 4-Point Self-Leveling Alignment Laser - GPL4
  • Multi-Mount
  • Laser Target
  • (3) AA 1.5V Batteries
  • Carrying Case


Cordless: Yes
Weight: 1.2 lbs.
Accuracy Margin (Horizontal): +/- 1/4 in.
Accuracy Margin (Vertical): +/- 1/4 in.
Accuracy Margin Distance (Horizontal): 100 ft.
Accuracy Margin Distance (Vertical): 100 ft.
Battery Type: NiMH
Effective Range (Visual): 100 ft.
Laser Class: 3R
Laser Color: Red
Laser Diode: 630 - 670nm < 5mW
Operating Temperature (F): 32 - 104 Degrees
Self-Leveling Range: +/- 5 Degrees
Tripod Thread: 1/4 in. - 20


  • Plumb
  • Transfer
  • Square
  • Recommendations


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    Bosch Laser & Measuring Tools Warranty Robert Bosch Tool Corporation ("Seller") warrants to the original purchaser only, that all Bosch lasers and measuring tools will be free from defects in material or work­manship for a period of one (1) year from date of purchase. Bosch will extend warranty coverage to two (2) years when you register your product within eight (8) weeks after date of purchase. Product registration card must be complete and mailed to Bosch (postmarked within eight weeks after date of purchase), or you may register on-line at

    If you choose not to register your product, a one (1) year limited warranty will apply to your product. 30 Day Money Back Refund or Replacement If you are not completely satisfied with the performance of your laser or optical instrument, for any reason, you can return it to your Bosch dealer within 30 days of the date of purchase for a full refund or replacement. To obtain this 30-Day Refund or Replacement, your return must be accompanied by the original receipt for purchase of the laser or optical instrument product. A maximum of 2 returns per customer will be permitted.