Spi MS150825003 Micrometer Head 1 Inch Digital Counter

Product Description

The SPI MS150825003 is a mechanical micrometer head with a digital counter display, designed for precision linear measurement in machining, inspection, and metrology applications. It measures a range of 0 to 1 inch with an accuracy of 0.0001 inch, making it suitable for high-precision work where manual reading errors must be minimized. The head features a ratchet stop thimble for consistent measuring force and a flat rotating carbide spindle face for durability and wear resistance. At 5.75 inches in length and 2 pounds, this unit is built for integration into fixtures, comparators, and custom measurement setups used by machinists and metrologists.

This micrometer head is suited for use in precision machining shops, quality control labs, and tool and die environments. It functions as a standalone measurement component or as a drop-in element in custom gauging fixtures and measurement stages. The 0.255 inch spindle diameter and flat rotating spindle accommodate a wide range of workholding and fixture configurations. The included short form certificate of calibration supports traceability requirements in regulated inspection environments.

Key Features

• 1 inch measuring range with 0.0001 inch accuracy
• Digital counter display for direct reading without thimble interpolation
• Ratchet stop thimble ensures consistent, repeatable measuring force
• Flat rotating carbide measuring face for extended wear life
• Satin chrome finish resists corrosion and reduces glare
• Includes short form certificate of calibration for traceability

Compatibility

Designed as a precision micrometer head for integration into custom fixtures, comparators, and measurement stages requiring a 1 inch range spindle component.

Installation Notes

Installation is typically performed by a machinist or metrologist integrating the head into a fixture or measurement assembly. Ensure the mounting clamp and fixture bore are clean and free of debris before seating the head. Do not overtighten the mounting clamp, as this can affect spindle alignment and measurement accuracy. Verify calibration after mounting using a known reference standard before taking production measurements.