Spi CMS150902004 Micrometer Calibration Standard 100mm

Product Description

The SPI CMS150902004 is a 100mm spherical-end micrometer calibration standard designed to verify and maintain the accuracy of outside micrometers in precision measurement environments. The standard measures 100mm in length and delivers an accuracy of 0.0020 mm, making it suitable for demanding dimensional verification tasks. A heat insulating handle is included to prevent thermal expansion errors caused by hand contact during measurement, which is a critical factor when working at this level of precision. This calibration standard is intended for use by metrology technicians, quality control personnel, machinists, and tool room professionals who require traceable, repeatable reference standards.

This calibration standard is used in machine shops, tool rooms, quality assurance labs, and manufacturing facilities where micrometers must be regularly verified against a known reference. It is appropriate for both bench-top calibration workflows and periodic field checks of outside micrometers. The included heat insulating handle makes it practical for repeated handling during calibration sessions without introducing thermal drift into readings.

Key Features

• 100mm reference length for verifying outside micrometer accuracy
• Accuracy of 0.0020 mm for high-precision calibration applications
• Spherical end geometry minimizes contact-point error during measurement
• Includes heat insulating handle to prevent thermal expansion from hand contact
• Factory calibrated — ready for immediate use as a reference standard
• Compact single-piece design suited for bench or portable calibration use

Compatibility

Designed for use with outside micrometers requiring a 100mm calibration reference standard in precision metrology and quality control applications.

Installation Notes

This calibration standard requires no installation but should be handled using the provided heat insulating handle at all times to prevent body heat from affecting dimensional accuracy. Store the standard in its protective case when not in use and allow it to acclimate to the ambient temperature of the measurement environment before use. Calibration procedures should follow applicable metrology standards and be performed by qualified personnel.