Digital Caliper Topex 31C625, measuring range 200 mm, electronic vernier

The Digital Caliper Topex 31C625 is a precision measuring tool designed for linear measurements up to 200 mm. The device combines a vernier-style sliding jaw with an electronic readout to deliver clear numeric results for external, internal and depth measurements. The caliper is intended for use in workshops, hobby projects and technical inspection tasks where fast, reliable measurement and simple operation are required.

Advantages

The electronic display provides quick, easy-to-read measurement values and reduces reading errors compared with purely analog vernier scales. The sliding jaw mechanism allows smooth positioning and repeatable contact with the measured surface. Compact and lightweight construction supports comfortable handheld use, and the 200 mm measuring range covers most common small to medium tasks. The instrument offers measurement modes for external, internal and depth measurement, allowing multiple applications with a single tool.

Suitable for

• Measuring external dimensions of parts and workpieces
• Measuring internal diameters such as holes and slots
• Depth measurement of grooves, steps and recesses
• Workshop layout, hobby model making and small repairs
• Quality control and basic technical inspection up to 200 mm

Key specifications

• Measuring range: 0–200 mm
• Measurement types: external, internal, depth
• Display: electronic digital readout
• Scale type: vernier-style sliding jaw with electronic sensing
• Operating principle: contact measurement with sliding jaws
• Form factor: handheld caliper suitable for bench or field use

How to use

Bring the sliding jaw into light contact with the object and read the measurement on the electronic display. For external measurements, close the jaws around the workpiece and ensure both jaws touch the surfaces evenly. For internal measurements, open the jaws inside the hole or slot until they contact the internal faces. For depth measurements, extend the depth probe end into the recess or groove and read the depth value. Zero the display at the fully closed position before taking comparative measurements, and switch measurement modes as required according to the task.

Usage recommendations

Maintain the measuring faces clean and free of debris to preserve accuracy; avoid heavy impacts and store the caliper in a protective case when not in use. Replace the battery promptly if display dimming or errors occur. For highest precision, measure at consistent temperature and handle the caliper gently to prevent wear of sliding surfaces.