Model#: BSHNGLM40

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New or Recon items with possible minor cosmetic damage; CPO 120 day money back guarantee
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Bosch GLM40 135 Ft. Laser Measure

  • Bosch GLM40 135 Ft. Laser Measure
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Instant information for most common laser measure functions, including area, distance, length, volume, continuous measurement and addition/subtraction. User doesn't need two measurements to get the third for area measurement. Back lighting allows user to see information in dark areas with better resolution. Handy pocket-size design that makes unit easy to use anywhere; package includes pouch, hand strap and target cards. Measuring distance extends to 135 Ft. with +/- 1/16 In. accuracy.
  • Area, distance, length, volume, continuous measurement, addition
  • Stores up to 10 measurements
  • Backlight for increased visibility
  • Pocket size for easy access anywhere
  • (1) 135 ft. Compact Laser Measure - GLM40
  • (1) Pouch
  • Target Cards
  • (1) Hand Strap
  • (1) Manual
  • (2) AAA batteries


Cordless: Yes
Weight: 0.22 lbs.
Automatic Shutoff Time: 20 sec. (Laser), 5 min. (Measuring Tool)
Batteries Included: 2
Battery Life (Approx.): 4 hrs.
Battery Type: AAA
Human Accessible Power Output: <1mW
Laser Diode: 635nm, < 1 mW
Laser Hazard Class: Hazard Class 2
Measuring Accuracy: +/- 1/16 in.
Measuring Range: 140 ft.
Operating Temperature (F): 14 - 113 Degrees



4.7 / 5.0
41 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Yes, I would recommend this to a friend (24)
Lightweight (22)
Ergonomic Design (13)
Easy To Use (1)
Value (1)
Best Uses
Frequent Use (1)
Large Projects (1)
Jobsite (1)
Yes, I would recommend this to a friend
Easy To Use
Ergonomic Design
Best Uses
Frequent Use
Large Projects
One man show
This thing is better than two guys. Helped me measure crown mold 12 ' height. I cannot tell you how accurate this thing is it is down to the 32" you can trust it. wish i had one years a time saver to.
January 6, 2018
10 months ago
Describe Yourself:
Handy and surprisingly accurate
I own this product and don't know what I did without it. I do a lot of estimating for my crew and the feature where I can add my measurement saves me a lot of time. originally I was skeptical of the accuracy but when using for a while i found it is better than a tape measure especially over long distances where a tape rule can bend.
August 17, 2017
Originally posted at
Don't overlook the fractions
Does a good job at measuring. Just that the fractions are really easy to overlook due to being too close to the edge and not as dark as the whole numbers.
August 16, 2017
Originally posted at
Compact, Accurate, High Quality
I use this to create floor plans of existing buildings. It's the quickest and most accurate way to measure in my opinion. I've been super impressed with the quality and reliability of this tool.
July 21, 2017
Originally posted at
Awesome accuracy!
For certain jobs, room area etc, this is a tool that everyone should have. Accuracy is great and speeds up the measuring tremendously.
July 19, 2017
Originally posted at
Powerful tool in small package
Fantastic product. I had a window sill I had measured prior to buying and this unit measured it exactly to the mm! I reckon for distances under 3m this thing is more accurate than stated by Bosch.
May 23, 2017
Originally posted at
extremely accurate but I found a glitch
great product and was very happy to find you can measures in inches instead of just feet and inches like the 35' measure I was using before. I did find a glitch in the software though, when using inches to measure and accessing the memory it would show the results in meters. switching to the default ft in would work properly though
April 18, 2017
Originally posted at
size and accuracy
We measure for commercial window shades at the top of the frame and require accuracy to 1/16th of an inch. The speed and accuracy over trying to use a tape measure is immeasurable in time saving and accuracy for proper manufacturing and fit. It has paid for itself many times over and I highly recommend it. The size is also a great plus as if you do not use the case, it easily fits in your shirt pocket. In short, it is typical of the Bosch superior quality.
October 18, 2016
Originally posted at
Yes, I would recommend this to a friend
Ergonomic Design
Great device.
It used everywhere that a measurement is required.
July 8, 2016
Yes, I would recommend this to a friend
Easy to use!
Being "technically Challenged", I was concerned but this is very simple to use. Light weight & easy to carry. Well done, Bosch!
April 20, 2016

Questions & Answers

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Browse 4 questions Browse 4 questions
does this device work outdoors?
A shopper on Dec 20, 2016
does this measure off of fluid?
A shopper on Dec 28, 2016
How do you change from inches to feet and inches?
A shopper on Jul 19, 2017
Can it upload to phone or computer?
Doug S on Feb 1, 2018


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.