Micrometer INSIZE 3202-125A, 100–125 mm range, calibrated standard

The INSIZE 3202-125A micrometer is a precision outside micrometer designed for measuring external dimensions from 100 to 125 mm. Delivered as a calibrated standard instrument, it is intended for workshop and inspection use where accurate linear measurement and repeatability are required. The tool is suited to measuring shafts, turned components and similar parts in metalworking and quality control applications.

Advantages

The micrometer provides a clear scale and a precise spindle movement that enables repeatable measurements within the 100–125 mm range. Delivered as a calibrated standard, it reduces the time needed to verify traceability for routine inspection tasks. The robust frame and hardened measuring faces support long-term stability and resistance to wear under normal workshop conditions.

Suitable for

• Measuring outside diameters of shafts and cylindrical parts
• Inspection of turned and machined components in production
• Dimensional quality control in workshops and inspection labs
• Calibration checks and verification when a certified standard instrument is required

When it may not be suitable

This micrometer is intended for external measurements only and is not suitable for internal or depth measurements. It is designed for linear measurement in the 100–125 mm range; applications requiring larger ranges or sub-micron resolution should consider other instruments. Extremely rough or irregular surfaces may reduce measurement accuracy and repeatability.

Key specifications

• Measuring range: 100–125 mm
• Measurement type: outside diameter (external measurement)
• Delivery condition: calibrated standard (certified)
• Measuring faces: hardened contact surfaces for wear resistance
• Frame: rigid frame suitable for workshop use

How to use

Bring the micrometer faces into gentle contact with the part and rotate the ratchet or thimble until the spindle contacts the workpiece with uniform measuring force. Read the scale according to the instrument’s graduation to obtain the measurement. For best results, ensure the workpiece and micrometer are clean and at similar ambient temperature, and use the ratchet or friction stop to avoid over-tightening. Record measurements and, if required, compare with the calibration certificate supplied with the instrument.

What to consider before purchase

• Required measuring range: confirm 100–125 mm covers the parts you will measure
• Required accuracy and resolution for your inspection needs
• Whether an outside micrometer is the correct tool (not suitable for internal/depth measurements)
• Calibration requirements and the need for a certified standard instrument for traceability

Usage recommendations

Use the micrometer in a clean, temperature-stable environment. Wipe measuring faces before and after use, avoid excessive force on the spindle, and store the instrument in its case when not in use. Periodic calibration checks are recommended to maintain measurement traceability and accuracy.