Spi CMS160714054 Hub Micrometer 2 to 3 Inches

Product Description

The SPI CMS160714054 is a mechanical hub micrometer designed for precision outside measurement in the 2 to 3 inch range. It features a ratchet thimble for consistent measuring force and a rotating spindle for smooth, repeatable operation. Both the anvil and spindle are carbide-tipped for long-term wear resistance. Graduation resolution is 0.0001 inches with a stated accuracy of 0.0002 inches. This tool is suited for machinists, toolmakers, quality control technicians, and precision maintenance tradespeople who require traceable, calibrated measurement in production or field settings.

The CMS160714054 is appropriate for use in machine shops, fabrication facilities, maintenance departments, and metrology labs where dimensional verification of shafts, hubs, flanges, and similar workpieces in the 2 to 3 inch range is required. A short-form certificate of calibration and standards documentation are included, making it ready for use in quality-controlled environments without additional calibration setup. The flat spindle face suits flat and cylindrical workpiece geometries.

Key Features

• 2 to 3 inch measuring range with 0.0001 inch graduation
• Stated accuracy of 0.0002 inches
• Ratchet thimble provides consistent, controlled measuring pressure
• Rotating spindle for smooth advancement and reduced workpiece marking
• Carbide anvil and spindle for extended service life under repeated use
• Includes protective case, short-form certificate of calibration, and standards

Compatibility

Designed as a general-purpose mechanical hub micrometer for outside measurement applications in the 2 to 3 inch range; compatible with standard metrology workflows wherever a calibrated mechanical outside micrometer is specified.

Installation Notes

This instrument is handled and used by machinists, toolroom technicians, and quality assurance personnel rather than installed in a system. Store the micrometer in the included case when not in use to protect the carbide faces and maintain calibration. Never force the spindle against a workpiece; use the ratchet thimble to apply consistent, limited measuring pressure. Periodic verification against gauge blocks or ring standards is recommended to confirm continued accuracy between formal recalibrations.