Micrometer INSIZE 3202-50A 25–50 mm standard, calibrated measuring instrument

INSIZE 3202-50A micrometer is a precision measuring instrument for external dimensions within the 25–50 mm range. The tool has a calibrated spindle and a thimble scale for direct reading, combined with a rigid frame engineered to maintain consistent contact pressure. It is designed for measuring thicknesses and diameters of small parts in workshop, inspection and machining environments where repeatable accuracy is required.

Advantages

The micrometer provides calibrated measurement capability and a clear thimble scale for straightforward reading without the need for conversion. Its robust frame minimizes deformation under normal use, helping to ensure consistent contact between anvil and spindle. The instrument’s standard format and ergonomic thimble make it suitable for frequent use in production and quality control tasks while offering the resolution and stability expected from a workshop micrometer.

Suitable for

• Measuring external diameters of shafts and pins
• Checking thickness of small metal, plastic or composite parts
• Use in inspection and quality control stations
• Dimensional checks during precision machining and assembly

Key specifications

• Measuring range: 25–50 mm
• Measurement type: external dimensions
• Scale type: calibrated spindle with thimble scale for direct reading
• Frame: rigid, standard-format frame for stable contact pressure
• Typical applications: workshop, quality control, precision machining

How to use

Place the micrometer’s anvil and spindle around the object to be measured and rotate the thimble until the faces make gentle contact with the part. Use any built-in ratchet or friction stop, if present, to apply consistent measuring pressure. Read the value directly from the thimble and sleeve scale, accounting for the calibrated spindle graduations. After measurement, retract the spindle to avoid unnecessary wear and store the instrument in a protective case or on a clean, dry surface.

Usage recommendations

Keep measuring faces clean and free of debris; perform periodic calibration checks according to your quality procedures. Avoid exposing the micrometer to shocks, extreme temperatures or high humidity to maintain accuracy. For best repeatability, use the ratchet or friction stop when provided and allow the instrument and workpiece to reach the same ambient temperature before measuring.