Model#: BSHNGLL30

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Brand new items;Full manufacturer warranty available
Manufacturer inspected, repaired and tested items; CPO 120 day money back guarantee
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New items with possible minor cosmetic damage; CPO 120 day money back guarantee
Returned items inspected, repaired and tested by CPO technicians; CPO 60 day money back guarantee

Bosch GLL 30 30 ft. Self-Leveling Cross-Line Laser

  • Bosch GLL 30 30 ft. Self-Leveling Cross-Line Laser
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Product Overview


The Bosch GLL 30 Self-Leveling Cross-Line Laser projects two lines, making a cross-line projection, for a wide array of level and align uses. This versatility makes it more valuable than a typical line laser. With top-notch accuracy and one-switch operation, the user's leveling and alignment tasks are done quickly and correctly. The laser lines are visible up to 30 ft. The Smart Pendulum System self-levels and indicates out-of-level condition to help ensure an accurate layout. The pendulum system locks when switched off, to assure secure tool transport. The included MM 2 Flexible Mounting Device provides microfine height adjustment, and it allows the laser to be clamped on virtually any surface from 1/2 in. to 2-1/4 in. thick, for level lines at any height.
  • Cross-line mode projects two very bright lines that are perfectly level and plumb
  • Class 2 Laser Product, < 1mW Power Output, Wavelength 635 nm
  • Manual mode tilt the laser to use the lines at any angle
  • Smart Pendulum system self-levels and indicates out-of-level condition
  • Secure transport pendulum locks when switched off
  • Ergonomic, compact and lightweight easy to use, easy to store
  • 30 ft. Self-Leveling Cross-Line Laser - GLL 30


Cordless: Yes
Length: 10.75 in.
Width: 2.8 in.
Height: 2.8 in.
Weight: 0.5 lbs.
Accuracy Margin (Horizontal): ±5/16 in
Accuracy Margin (Vertical): ±5/16 in
Accuracy Margin Distance (Horizontal): 30 ft
Accuracy Margin Distance (Vertical): 30 ft
Batteries Included: 2
Battery Type: Alkaline
Bluetooth Compatibility: No
Case Included: No
Charger Included: No
Effective Range (Visual): 30 ft
Laser Class: Class II
Laser Color: Red
Laser Diode: 635 nm = 1 mW
Operating Temperature (F).Run Time (Max.): 41 Degrees F to 104 Degrees F
Powered Tool Power Source: Electric - Cordless
Self-Leveling Range: 5 Degrees
Tripod Thread: 1/4 in - 20 in
Voltage: 1.5V
Wifi compatibility: No



3.9 / 5.0
27 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Yes, I would recommend this to a friend (4)
Easy To Use (4)
Value (3)
Ergonomic Design (2)
Lightweight (1)
Lack of Power (1)
Best Uses
Home Repair (3)
Frequent Use (2)
Small Projects (2)
Jobsite (2)
GLL 30 not so bright
Not what I expected from a Bosch tool. Very dissapointed , leaser not bright and horizontal line only about 5 feet long. Will return it for a better one.
August 10, 2019
Originally posted at
I bought this to do a bathroom tile job.
This little piece of ...... kept blinking, no matter how much I tried to level it to be within the +_4 degree.
there is no fish eye bubble or any indicator to let you know that the laser is level enough for it to function, so I basically have a strobe light that shoots out a crooked line.
Also the distance that I had to have it in to do my tub, was not far enough back, so I couldn't even see the horizontal line all around the tub tile area.
Do not buy this, spend some extra bucks and get a better laser.
August 2, 2019
Originally posted at
Great tool for basement renovation
An essential tool for stud alignment or making reference lines anywhere in space.
August 1, 2019
Originally posted at
Perfect tool for the job
Easy set up - I laid it on the dining room table. Trying to level cabinet tops for new counter tops is tough with a 6' level. The GLL30 did the job with two twists of the positioning.
July 31, 2019
Originally posted at
Laser is way too dim
I've tried using this for a few projects now from hanging cabinets to putting up siding and it's basically useless. If you're inside with no lights on you can see the laser ok but if you're outside it's pretty much invisible. I'm on a side of my house right now where the wall is 90 percent in the shade and the other small part is in the sun. I can barely see it in the shade and can't find it at all in the sun. I've used other laser levels in the sun and had no problem whatsoever. I could have spent a lot more money and gotten something better but I tried to go cheap and now I have a tool that is pretty much worthless...
July 5, 2019
Originally posted at
Does the job effectively and without any complication and questioning.
May 23, 2019
Originally posted at
Works great
I like the clamp that comes with it as well you can clip almost anything, working in new home construction as a superintendent this will
Help checking jobs.
May 23, 2019
Originally posted at
Great for DIY
Bought this to supplement my manual 3 point level. The 3 point is more accurate but not near as quick and portable as this level. This is great for moving it around in inside work. I say inside because the beam gets pretty weak in brighter light.

But that is what I wanted, hang a picture, spot a row of nails, project a point from A to B with accuracy, laying tile in a small bathroom where the 3 point is just in the way. Kind of pricey but pays off in convenience. One of those nice to have modern tools.
March 8, 2019
Originally posted at
Extremely Basic Laser Level
I bought this laser level to help hang pictures on a wall and struggled at the best of times to adjust the heights and to get a wide enough spread with the laser to accurately mount of 4' x 4' painting. I could have hung it with a standard level in 1/2 the time. In addition, this laser level only does 100% horizontal and vertical unlike the image in the product guide
February 11, 2019
Originally posted at
Wrong line is bright.
After reading and understanding the instruction PDF file thoroughly, I tested the GLL 30 cross-line laser and found it wanting. While the device rested on two inches of books placed on the floor, the bright vertical beam easily reached the peak of my 13' ceiling. At about 5-feet on each side of the center line, the horizontal line faded faded well beyond usefulness for a total horizontal line of 10 feet. (Lighting in the room during the test was TV-watching level.)

Thankfully, the warranty Bosch offers is exceptional; I'm returning the product to the vendor.
December 25, 2018
Originally posted at

Questions & Answers

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Browse 8 questions Browse 8 questions and 8 answers
Does it leave a line on the wall for paint striping?
A shopper on Oct 1, 2016
BEST ANSWER: The line laser can display a sold red line on a wall.
Does it. Work on ceiling grid ?
A shopper on Jan 19, 2017
BEST ANSWER: If you have a way to mount it level at that height then yes it would work up to 30ft. However, usually rotary lasers are used for that purpose
Can you select either horizontal or vertical, or is their only one mode/only crosshair?
A shopper on Jul 24, 2018

New Vs. Reconditioned

What's the difference between New and Factory-Reconditioned?

Factory-Reconditioned products have been returned to the manufacturer and are restored to like-new operating condition; they go through a rigorous testing and inspection process. Plus, they offer a significant savings vs. new.
  • Reconditioned products may have minor cosmetic blemishes or scratches that do not affect item performance.
  • Reconditioned products may not come with all of the consumables the new version comes with (bits, sanding pads/papers, cases, etc.).
  • Both come with a manufacturer warranty and are covered by our Money Back Guarantee; New is 30 days, Reconditioned is 120 days.
Condition: New Factory Reconditioned
Features: Same Same
Specs: Same Same
Includes: 30 ft. Self-Leveling Cross-Line Laser - GLL 30 30 ft. Self-Leveling Cross-Line Laser - GLL30-RT
Availability: In Stock Out of Stock
Warranty: 2 Year 1 Year


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.