Model#: BSHNGLL55

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Bosch GLL55 Professional Self-Leveling Cross-Line Laser

  • Bosch GLL55 Professional Self-Leveling Cross-Line Laser
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The Bosch GLL 55 Professional Self-Leveling Cross-Line Laser features vertical, horizontal and cross-line modes and can project two lines independently or together, for a broad array of alignment and leveling applications. It includes the Bosch-exclusive VisiMax technology, which allows for outstanding line visibility in standard working conditions. VisiMax constantly monitors the laser's temperature so the diodes are always driven to maximum line brightness, while protecting the laser diodes from overheating. The laser lines are visible up to 50 ft., with an accuracy of up to 1/8 in. at 33 ft. The Bosch Smart Pendulum System self-levels and indicates out-of-level condition, to help ensure an accurate layout. It locks the pendulum after the laser is switched off for secure transport. The included magnetic L mount provides strong magnets to attach to steel studs and a free-standing mode with retractable feet.
  • VisiMax technology delivers maximum line visibility in standard working conditions
  • Easy-to-use laser setup modes projects vertical, horizontal and cross lines
  • Versatile job layout lines can be projected separately or together for a variety of level and alignment applications
  • Smart Pendulum System allows tool to self-level, and it indicates out-of-level condition
  • Secure laser transport after switching off, pendulum is locked
  • Simple keypad operation allows easy selection among the layout modes
  • Magnetic L mount has strong magnets to attach to steel
  • Robust over-molded construction built to IP54 dust and water-protection standards
  • Self-Leveling Cross-Line Laser - GLL 55
  • Magnetic Mounting Bracket
  • Laser Target Plate
  • (3) AA Batteries
  • Hard Carry Case


Length: 4.4 in.
Weight: 1.08 lbs.
Accuracy Margin (Horizontal): +/- 1/8 in.
Accuracy Margin Distance (Horizontal): 33 ft.
Battery Type: AA
Effective Range (Visual): 50 ft.
Human Accessible Power Output: <1mW
Laser Diode: 635 - 650 nm
Laser Hazard Class: Hazard Class 2
Operating Temperature (F): 14 deg. F - 122 deg. F
Self-Leveling Range: 4 deg.
Tripod Thread: 1/4 in. - 20



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Yes, I would recommend this to a friend (1)
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Yes, I would recommend this to a friend
Easy To Use
Best Uses
Frequent Use
Large Projects
Small Projects
Home Repair
Very nice line laser
There are a couple of nice features on this laser that I hadn't previously seen that are nice.
1. It has a lock on the line laser so you don't need to have it in a horizontal or vertical position for when you need to project an angle.
2. It also locks the pendulum mounted auto leveling laser so it is less susceptible to damage when moving it around.
3. It has two different mount threading’s on the bottom so it can work with the bigger 5/8’s rotary style tripods as well as smaller ¼ camera style ones. I had to buy a converter for my other laser to work on my Bosch tripod.
Another nice touch on this is it has a place for a spare set of batteries. It's also smaller than some of the competitors if that is important to you. I checked the line width against another brand and they were equally accurate (or inaccurate if you are a pessimist) with the same width. Overall it’s a great value relative to the other models on the market given it is $20+ less than the most popular competitor.
2 size thread mounts is a nice touch
2 size thread mounts is a nice touch
January 11, 2017
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Questions & Answers

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Browse 2 questions Browse 2 questions and 2 answers
Can you use on floor layout ?
A shopper on Jan 29, 2017
Can i turn this laser up?
Matthew B on Dec 8, 2016
BEST ANSWER: i turn it up to 11 :)

It can also be tilted in any direction to project any angels when in the locked position.


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.