Digital caliper Topex T 31C628 150 mm stainless steel

Digital caliper Topex T 31C628 150 mm stainless steel is a precision measuring tool with a 150 mm measuring range and stainless steel construction. The device provides an electronic digital readout for outside, inside, depth and step measurements with selectable metric and imperial units. Its battery-powered slider delivers accurate, easy-to-read values suitable for workshop tasks, hobby projects and routine quality control measurements.

Advantages

The stainless steel body ensures durability and resistance to wear while maintaining measurement stability. The digital display offers fast, clear readings in millimetres or inches, and the electronic slider includes zero-setting and unit conversion functions for efficient measurement workflows. Compact size and straightforward operation make the caliper convenient to carry and use in confined spaces.

Suitable for

• Measuring external diameters and widths of parts
• Measuring internal diameters of holes and slots
• Measuring depths and steps on components
• Workshop layout, maintenance and fabrication tasks
• Hobbyist projects such as model making and electronics
• Basic quality control and inspection checks

Key specifications

• Measuring range: 150 mm
• Measurement types: outside, inside, depth, step
• Display: digital LCD with metric/imperial selection
• Construction material: stainless steel
• Power source: replaceable battery (electronic slider)
• Resolution: standard 0.01 mm / 0.0005 in
• Operating principle: electronic vernier slider with zeroing and unit conversion

How to use

Switch on the caliper and set the display to the desired unit (mm or in). Before measuring, close the jaws and press the zero button to calibrate the reading. For external measurements, position the workpiece between the outer jaws and slide until the jaws contact the part; read the value on the display. For internal measurements, use the inner jaws and open them until they contact the internal surfaces. For depth measurements, extend the depth rod into the hole or recess and read the display. After use, wipe the caliper clean, retract the jaws slightly and switch off to conserve battery life.

Usage recommendations

Handle the caliper on a stable surface and avoid excessive force when closing the jaws to prevent damage to the measuring faces. Keep the stainless steel surfaces free of dirt, chips and corrosive substances; store the instrument in a protective case. Replace the battery promptly when display dimming or erratic readings occur, and check zero calibration regularly for accurate results.