MS 90 Professional - Measurement BOSCH - Free user manual and instructions
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| Type of product | Laser distance meter |
| Brand | Bosch Professional |
| Model | MS 90 Professional |
| Measuring range | 0.05 to 90 metres |
| Measuring accuracy | ±1.5 mm |
| Measurement units | Metres, feet, inches |
| Laser class | Class 2, 635 nm, <1 mW |
| Functions | Distance, area, volume, continuous measurement, indirect measurement (Pythagoras), addition and subtraction |
| Memory | Last 20 measured values |
| Display | LCD with backlight |
| Battery type | 2 x AA (1.5 V) |
| Battery life | Up to 20,000 measurements |
| Automatic switch-off | Device: 5 minutes |
| Automatic laser-off | Laser: 30 seconds |
| Protection class | IP54 (dust and splash protected) |
| Dimensions | 118 x 57 x 32 mm |
| Weight | 180 g (with batteries) |
| Operating temperature | -10°C to +50°C |
| Storage temperature | -25°C to +70°C |
| Tripod mount | 1/4 inch thread |
| Included accessories | 2 x AA batteries, protective pouch, hand strap |
| Maintenance | Clean lens and housing with a dry, soft cloth; avoid solvents and water |
| Safety | Never look directly into the laser beam; do not operate near eyes |
| Service and repair | Only an authorised Bosch service centre should repair the device |
Frequently Asked Questions - MS 90 Professional BOSCH
How do I measure a distance?
Press the ON button to activate the laser. Aim at the target and press the measure button. The distance appears on the display. For continuous measurement, press and hold the measure button.
How do I change the unit from metres to feet or inches?
Repeatedly press the unit button (usually labelled UNI or with a ruler icon) until the desired unit appears on the display. The device supports metres, feet and inches.
How do I calculate area and volume?
Press the area/volume function key. The device will prompt you to measure the first side (length). After recording it, measure the second side (width). For volume, also measure the height. The result is automatically calculated and displayed.
What is the Pythagorean or indirect measurement function?
This function calculates distances when direct measurement is not possible. By measuring two or three sides of a right triangle, the device computes the remaining side using the Pythagorean theorem. Follow the on-screen prompts to complete the measurements.
What should I do if the display shows Error?
The Error message usually indicates that the target is too close or too far away, or the surface is too reflective. Ensure the laser hits an opaque surface and the distance is within the measuring range of 0.05 to 90 metres.
How do I replace the batteries?
Open the battery compartment on the back of the device. Insert two new AA batteries with correct polarity, then close the cover. A blinking battery symbol indicates low battery.
Is the laser distance meter waterproof?
The device has an IP54 rating, meaning it is protected against dust and splashing water. It is not designed for submersion or heavy rain. Avoid using it in extreme weather conditions.
Can the device be used in bright sunlight?
Yes, the device works outdoors, but the laser spot may be hard to see at long distances in direct sunlight. Using a target plate improves accuracy and visibility.
How do I maintain the measuring device?
Clean the lens with a dry, soft cloth. Do not use liquids or solvents. Store the device in the protective pouch when not in use, and avoid exposure to extreme temperatures.
How do I know if the device needs repair?
If measurements are consistently inaccurate beyond the specified tolerance, or the device does not turn on even with fresh batteries, contact an authorised Bosch service centre for inspection and repair.
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USER MANUAL MS 90 Professional BOSCH
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Product information
Brand : BOSCH
Model : MS 90 Professional
Category : Measurement