Micrometer INSIZE 3203-50A 25–50 mm measuring micrometer with calibration certificate

INSIZE 3203-50A 25–50 mm measuring micrometer with calibration certificate is a precision external measuring instrument designed for accurate measurement of outside diameters and thicknesses in workshops and quality control environments. The micrometer provides a 25–50 mm measuring range and is supplied with a traceable calibration certificate, allowing its use in inspection tasks where documented accuracy is required.

Advantages

This measuring micrometer offers stable mechanical construction and a fine spindle for repeatable, high-resolution measurements. Supplied with a calibration certificate, it supports traceability and quality assurance processes. The instrument is compact and robust for workshop use and is compatible with common metrology procedures, enabling reliable data capture for pass/fail decisions and inspection records.

Suitable for

• Measuring outside diameters of shafts, pins and cylindrical parts
• Thickness measurement of sheet metal, plates and small components
• Quality control and inspection in production and maintenance
• Dimensional checks in mechanical engineering and metalworking

Key specifications

• Measuring range: 25–50 mm
• Type: external measuring micrometer
• Resolution: typical fine spindle resolution appropriate for a mechanical micrometer (standard graduation)
• Calibration: supplied with a traceable calibration certificate
• Intended use: precision measurement of outside diameters and thicknesses
• Construction: compact, workshop-suitable frame for stable contact

How to use

Before measurement, ensure the anvil and spindle faces are clean and the micrometer is at ambient temperature. Close the spindle lightly on a calibration standard or reference gauge to confirm zero or to compare against the provided calibration certificate. Position the workpiece between the anvil and spindle, rotate the thimble until the spindle contacts the part with firm, consistent measuring force, and read the measurement according to the micrometer’s graduation. For repeatable results, use the same measuring technique and avoid applying excessive torque to the ratchet or thimble.

Usage recommendations

Store the micrometer in its protective case when not in use, keep measuring faces clean and free from nicks, and schedule regular recalibration according to your quality system requirements. Use appropriate reference standards for verification and allow thermal equilibrium between the instrument and measured parts to minimise dimensional error.