Choosing between laser measures often comes down to a practical question: is a compact tool for everyday room and workshop measurements enough, or will longer distance reach and extra layout functions make a meaningful difference? These two blue Bosch measuring layout tools share a backlit display and included battery, but they take distinctly different approaches to range, handling, and on-screen functionality.
Quick verdict
Pick the Bosch Blaze 100ft Backlit Laser Measure when measurements up to 100 feet cover the work you do and low weight matters. At 0.19 pounds, it is the more compact choice for keeping close at hand in a toolbox.
Choose the Bosch GLM165-40 Blaze 165ft Ergonomic Laser Measure when your projects call for more reach and a more feature-rich readout. Its 165-foot measurement range, 4-line display, AutoSum function, 360 tilt sensor, and self-leveling feature suit shoppers who want more than straightforward point-to-point distance measurement.
At-a-glance comparison
| Detail | Bosch Blaze 100ft Backlit Laser Measure | Bosch GLM165-40 Blaze 165ft Ergonomic Laser Measure |
|---|---|---|
| Listed price | USD 28.95 | USD 43.95 |
| Measurement reach | Up to 100 feet | Up to 165 feet |
| Display and power | Backlit display; battery included | 4-line backlit display; battery included |
| Added listed functions | Compact design | 360 tilt sensor, AutoSum function, self-leveling |
| Listed weight | 0.19 lbs | 1 lb |
The listed-price gap is $15. The GLM165-40 adds 65 feet of reach, while the 100ft Bosch Blaze has the notably lighter listed weight.
Where each Bosch laser measure wins
Reach and layout functions: The GLM165-40 is the clear fit for longer spans, with a stated 165-foot range versus 100 feet for the Bosch Blaze 100ft. Its 4-line display, AutoSum function, 360 tilt sensor, and self-leveling feature create a more expansive set of listed measurement and layout tools.
Compact carry: The Bosch Blaze 100ft is listed at 0.19 pounds and measures 3.9 inches long, 1.7 inches wide, and 0.9 inches high. That profile favors shoppers who want a small laser measure for routine indoor distances and quick measuring tasks.
Straightforward price choice: At USD 28.95, the Bosch Blaze 100ft has the lower listed price. The GLM165-40 is listed at USD 43.95 and centers its case on additional range and functions rather than a smaller form factor.
Product notes
Bosch Blaze 100ft Backlit Laser Measure - Blue (GLM100-23
The Bosch Blaze 100ft Backlit Laser Measure is the direct choice for measurements that stay within its stated 100-foot range. Its backlit display supports reading measurements in varied lighting, and the included battery means the tool is equipped for use out of the box. The 0.19-pound listed weight and compact dimensions are especially appealing when the laser measure will live in a crowded toolbox, pocket, or small work kit. Choose this Bosch Blaze model for focused distance measuring in home or workshop tasks where a compact tool is the priority. Its key limitation is reach: it stops at 100 feet, so it does not match the 165-foot range offered by the GLM165-40.
Bosch GLM165-40 Blaze 165ft Ergonomic Laser Measure - SEALED
The Bosch GLM165-40 Blaze is aimed at shoppers whose measuring and layout work benefits from added reach and more information on screen. Its stated 165-foot range gives it more room for larger spaces, while the ergonomic design is described for comfortable handling during extended use. Beyond the shared backlit display and included battery, this model lists a 4-line display, AutoSum function, 360 tilt sensor, and self-leveling feature. Select the GLM165-40 when those functions align with how you measure and lay out projects. The tradeoff is a 1-pound listed weight, compared with 0.19 pounds for the 100ft Bosch Blaze, making it the less lightweight option.
Final choice by use case
For quick home, workshop, and shorter-distance measuring, choose the Bosch Blaze 100ft Backlit Laser Measure. For longer measurements and projects where the 4-line display, AutoSum, tilt sensor, and self-leveling features are useful, choose the Bosch GLM165-40 Blaze 165ft Ergonomic Laser Measure.
