Mitutoyo 295-253CAL Spherical Face Micrometer Nist Cal

Product Description

The MITUTOYO 295-253CAL is a mechanical spherical face micrometer designed for precise outside measurement applications where a standard flat anvil would not make adequate contact with curved or contoured workpiece surfaces. It features a ratchet thimble for consistent measuring force and a digital counter for direct readout, reducing the chance of misreading the thimble scale. Both the anvil and spindle are carbide-tipped for wear resistance in production and inspection environments. The unit ships with a calibration certificate traceable to NIST standards, making it ready for use in quality-controlled settings without additional calibration steps.

This micrometer is suited for dimensional inspection of cylindrical bores, radiused surfaces, tubing walls, and other curved features where a spherical anvil face is required to establish a well-defined contact point. It is used in machine shops, manufacturing quality departments, and precision measurement labs. The included case protects the instrument during storage and transport. It is intended for installation and use by machinists, metrology technicians, and quality control personnel.

Key Features

• Spherical anvil face provides accurate contact on curved and contoured surfaces
• Ratchet thimble delivers repeatable, consistent measuring force
• Digital counter enables direct, easy-to-read measurement output
• Carbide anvil and spindle materials resist wear for long service life
• NIST-traceable calibration certificate and case included
• Non-rotating spindle design preserves workpiece surface integrity

Compatibility

Designed as an OEM-style precision measuring instrument for use in general dimensional inspection applications requiring a spherical anvil contact face.

Installation Notes

Spherical face micrometers are used by metrology technicians and machinists and require no permanent installation. Before use, verify the instrument calibration against a known standard and inspect the carbide faces for damage. Store in the provided case when not in use to prevent damage to the measuring faces. Handle measuring surfaces with care and avoid dropping the instrument, as impact can affect calibration and accuracy.