Bosch GLM 100-25 C
Bosch GLM 100-25 C Professional Laser Measure User Manual
Model: GLM 100-25 C | Brand: Bosch
Introduction
This manual provides essential information for the safe and efficient operation of your Bosch GLM 100-25 C Professional Laser Measure. Please read it thoroughly before using the device.
The Bosch GLM 100-25 C is a professional laser distance meter designed for accurate measurements up to 100 meters. It features an inbuilt camera viewfinder, a high-contrast IPS display, and Bluetooth connectivity for seamless data transfer to the Bosch MeasureOn app. Its robust design with IP54 protection ensures reliability in demanding work environments.

Image: Bosch GLM 100-25 C Professional Laser Measure, front view showing the display and control buttons.
Package Contents
Verify that all items listed below are included in your package:
- 1 x Bosch GLM 100-25 C Professional Laser Measure
- 1 x Protective Bag
- 3 x 1.5 V LR6 Battery (AA)

Image: Contents of the Bosch GLM 100-25 C package, including the laser measure, a protective bag, and three AA batteries.
Setup
Battery Installation
- Locate the battery compartment cover on the device.
- Open the cover.
- Insert the three 1.5 V LR6 (AA) batteries, ensuring correct polarity (+/-).
- Close the battery compartment cover securely.
Initial Power On
Press the power button to turn on the device. The IPS color display will illuminate.
Operating Instructions
Basic Measurement
- Turn on the Bosch GLM 100-25 C.
- Select your desired measurement mode using the function buttons.
- Use the digital viewfinder to aim at your target accurately. The viewfinder provides clear visibility even at long ranges and in bright conditions.
- Press the measurement button to initiate the measurement. The result will be displayed on the IPS screen.

Image: Step-by-step guide on using the Bosch GLM 100-25 C, showing turning on, aiming with the viewfinder, and measuring.
Bluetooth Connectivity and Data Transfer
The device features Bluetooth connectivity for efficient data documentation and transfer.
- Ensure Bluetooth is enabled on your Bosch GLM 100-25 C and your mobile device (smartphone or tablet).
- Download and install the Bosch MeasureOn app from your device's app store.
- Open the MeasureOn app and follow the on-screen instructions to pair your GLM 100-25 C.
- Once connected, measurements can be transferred directly to the app for documentation, editing, and sharing.
Digital Camera Viewfinder
The integrated digital camera viewfinder with zoom function assists in precise targeting, especially for outdoor measurements or when the laser dot is not easily visible.
- The viewfinder image is displayed on the IPS screen.
- Use the zoom function to magnify the target area for improved accuracy.
Maintenance
Cleaning
- Keep the device clean to ensure optimal performance.
- Wipe the device with a soft, damp cloth. Do not use harsh cleaning agents or solvents.
- Regularly clean the lens of the digital camera viewfinder and the laser exit/receiver aperture with a soft, lint-free cloth.
Storage
- When not in use, store the device in its protective bag.
- Store in a dry, dust-free environment, away from direct sunlight and extreme temperatures.
- Remove batteries if the device will not be used for an extended period to prevent leakage.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not turn on. | Batteries are depleted or incorrectly inserted. | Check battery polarity or replace with new batteries. |
| Inaccurate measurements. | Measurement surface is reflective, transparent, or too far. Device is not stable. | Use a target plate for difficult surfaces. Ensure device is stable during measurement. |
| Bluetooth connection issues. | Bluetooth is off on device/phone. App not installed or paired. | Ensure Bluetooth is active on both devices. Re-pair the device in the MeasureOn app. |
| Display is difficult to read outdoors. | Bright ambient light. | Utilize the digital camera viewfinder for better targeting and visibility. Adjust display brightness if possible. |
Specifications

Image: Diagram illustrating the technical specifications and features of the Bosch GLM 100-25 C.
| Feature | Detail |
|---|---|
| Measuring Range | 0.08 – 100 meters |
| Measurement Accuracy (typical) | ± 1.5 mm |
| Measurement Time (typical) | < 0.5 seconds |
| Measurement Time (max) | 4 seconds |
| Laser Diode | 650 nm, < 1 mW |
| Laser Class | 2 |
| Units of Measurement | m/cm/ft/inch |
| Digital Viewfinder | Integrated |
| Data Transfer | Bluetooth™ 4.2 Low Energy |
| Dust and Splash Protection | IP54 |
| Memory Capacity | 50 values |
| Power Supply | 3 x 1.5 V LR6 (AA) |
| Automatic Deactivation | 5 minutes |
| Weight (approx.) | 0.23 kg (230 Grams) |
| Tripod Thread | 1/4" |
| Measurement Range of Incline Measurement | 0 – 360° (4 x 90°) |
| Measuring Accuracy (typical) | ± 0.2° |
| Item Dimensions LxWxH | 14.2 x 6.4 x 2.8 Centimeters |
| Material | Plastic |
| Colour | Blue |
Warranty and Support
Warranty Information
The Bosch GLM 100-25 C Professional Laser Measure comes with a 1 Year warranty provided by the manufacturer from the date of purchase.
Manufacturer: Robert Bosch Power Tools Sdn Bhd - Malaysia
Customer Support
For technical assistance, service, or warranty claims, please contact Bosch customer support:
- Importer/Packer: BOSCH Limited, Post box no. 3000, Hosur Road, Adugodi, Bangalore - 560030, India
- Phone: 18004258665
- Email: bpt@in.bosch.com
Applications
The Bosch GLM 100-25 C is suitable for various professional applications requiring precise distance measurements, including:
- Architects: For accurate site surveys and planning.
- Construction Professionals: For measuring dimensions on construction sites.
- Electricians: For cable length calculations and installation planning.
- Interior Designers: For room measurements and layout planning.

Image: Examples of the Bosch GLM 100-25 C being used by architects, construction workers, and electricians in various professional settings.
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