Spi MS160712003 Micrometer Calibration Standard 3 Inch

Product Description

The SPI MS160712003 is a flat end micrometer calibration standard used to verify and set the accuracy of outside micrometers. Machined to a maximum length of 3 inches with a calibrated accuracy of 0.000080 inches, this standard provides a reliable reference point for precision measurement tasks on the shop floor or in a calibration lab. It includes a heat insulating handle to prevent thermal expansion errors caused by hand contact, which is critical when working at this level of measurement precision. Metrology technicians, machinists, and quality control personnel use this type of standard as part of routine gage calibration and verification workflows.

This calibration standard is designed for use with outside micrometers in precision machining, manufacturing, and inspection environments. The flat end configuration makes it compatible with standard anvil and spindle face contact surfaces. It is well-suited for tool rooms, quality labs, and production floor gage stations where micrometers require periodic calibration checks or zero-setting before use. The included heat insulating handle supports stable, repeatable measurements regardless of ambient handling conditions.

Key Features

• Calibrated flat end standard with a maximum length of 3 inches
• Accuracy to 0.000080 inches for high-precision verification
• Flat end shape compatible with standard micrometer anvil and spindle faces
• Includes heat insulating handle to minimize thermal expansion errors during handling
• Factory calibrated for immediate use in gage verification routines

Compatibility

Designed for use with outside micrometers as a calibration and setting standard.

Installation Notes

Calibration standards should be handled only by the insulating handle to avoid thermal growth from body heat, which can affect readings at sub-ten-thousandth accuracy levels. Store the standard in its case away from temperature extremes and keep contact faces clean and free of burrs or debris before use. Calibration work should be performed by a qualified metrology technician or machinist following applicable measurement standards and shop quality procedures.