Spi CMS150902001 Micrometer Calibration Standard 75mm

Product Description

The SPI CMS150902001 is a spherical end micrometer calibration standard used to verify and calibrate outside micrometers in precision measurement applications. The standard measures 75mm in maximum length and is factory calibrated to an accuracy of 0.0015mm, making it suitable for quality control environments where measurement traceability is required. A heat insulating handle is included to prevent thermal expansion from body heat affecting the calibration reference during use. This type of reference bar is typically handled by metrology technicians, machinist quality leads, and tool room personnel.

This calibration standard is designed for use with outside micrometers in shop floor, tool room, and laboratory settings. The 75mm length places it in a common calibration range for mid-size micrometer frames. The included heat insulating handle allows the technician to hold the standard without transferring heat to the gauge block body, which is critical for maintaining measurement accuracy during the calibration process.

Key Features

• Factory calibrated with an accuracy of 0.0015mm
• 75mm maximum length covers a common micrometer calibration range
• Spherical end geometry for repeatable, consistent contact point alignment
• Includes heat insulating handle to minimize thermal error during use
• Compatible with standard outside micrometer frames

Compatibility

Designed for use with outside micrometers requiring a calibration reference standard in the 75mm range.

Installation Notes

Handle only with the provided heat insulating grip to avoid thermal growth that could affect calibration accuracy. Allow the standard to acclimate to the ambient temperature of the measurement environment before use. Store in a protective case away from impacts, moisture, and abrasive surfaces when not in use. Calibration standards should be re-certified at intervals consistent with your facility's quality management procedures.