Digital Caliper Mahr 150 mm RT – 150 mm measuring range, no data output

The Mahr Digital Caliper RT with a 150 mm measuring range is a handheld precision tool for linear measurements in millimetres. This model provides clear digital readout for external, internal and depth dimensions and is designed for routine dimensional checks in workshops, quality control, maintenance and hobby applications. The caliper features a compact, robust frame and simple operation without a data output interface, making it suitable when manual reading and straightforward measurement control are required.

Advantages

The caliper delivers reliable accuracy and repeatability for common inspection tasks while remaining easy to operate and maintain. Its digital display gives fast, unambiguous readings in metric units and the construction resists everyday workshop wear. The absence of a data output interface simplifies the tool and reduces potential points of failure, while the lightweight handheld design supports quick measurements and portability between workstations.

Suitable for

• Measuring external diameters and lengths on parts and components
• Measuring internal dimensions such as bores and slots
• Measuring depth of holes and recesses
• Routine dimensional checks in production and quality control
• Maintenance tasks and hobbyist metalworking or model making

Key specifications

• Measuring range: 0–150 mm
• Display type: digital readout (metric)
• Measurable quantities: external, internal and depth measurements
• Construction: handheld caliper with rigid jaws and depth rod
• Power: battery powered for portable use

How to use

Switch on the display and zero the caliper at the fully closed position before measuring. Place the jaws around the external feature, inside the bore, or use the depth rod for hole depth measurements, and read the value directly from the digital screen in millimetres. Apply consistent, light measuring force to ensure repeatable results and avoid tilting the tool relative to the measured surface. After use, clean debris from the measuring faces and store the caliper in a protective case or drawer to prevent damage.

Usage recommendations

For best accuracy, perform periodic checks with a calibrated gauge block or reference standard and replace the battery when display dimming or unstable readings occur. Avoid exposing the instrument to heavy impacts, chips, or prolonged coolant immersion; wipe surfaces clean and use a light machine oil on sliding surfaces if storing in humid environments.