Caliper gauge SUNDO MAUA 150 mm measuring tool, 0.05 mm accuracy

The SUNDO MAUA caliper gauge is a manual measuring tool with a 150 mm measuring range and 0.05 mm accuracy, intended for straightforward metrology tasks. The compact steel construction enables reliable repeatability for external, internal and depth measurements of small parts. Its mechanical design provides stable contact points and a clear scale for routine inspection, workshop use and hobby applications where simple, repeatable measurements are required.

Advantages

The caliper offers precise reading with 0.05 mm resolution across a 150 mm span, combining durability of steel construction with a user-friendly sliding mechanism. Its simple, purely mechanical operation does not depend on batteries or electronics, which reduces maintenance and makes it suitable for environments where electronic devices might fail. The instrument’s compact form factor and straightforward scale make it practical for quick checks and quality control tasks.

Suitable for

• External diameter measurement of shafts, pins and small components
• Internal diameter checks of bores and openings
• Depth measurements of grooves, holes and recesses
• Routine inspection and quality control in workshops and small production
• Hobbyist and model-making measurement tasks

Key specifications

• Measuring range: 150 mm
• Resolution / accuracy: 0.05 mm
• Material: steel construction
• Measurement types: external, internal, depth
• Operation: manual, mechanical slide with graduated scale
• Scale type: analog graduated scale for direct reading

How to use

Place the caliper jaws around or inside the feature to be measured and slide the movable jaw until it contacts the part without applying excessive force. For depth measurements, extend the depth rod into the hole or recess until it rests on the bottom and read the scale. Read the value directly from the graduated scale, taking the main scale and the vernier-like resolution into account to determine the 0.05 mm increment. Ensure the faces are clean and the contact is stable before recording the measurement.

Usage recommendations

Keep measuring faces clean and free of debris; store the caliper in a dry place to avoid corrosion. Periodically check zero alignment on a reference gauge block or flat surface. Avoid heavy impacts and do not use as a pry bar to maintain accuracy and repeatability over time.