Spi CMS141015002 Micrometer Calibration Standard 275mm

Product Description

The SPI CMS141015002 is a spherical-end micrometer calibration standard used to verify and maintain the accuracy of outside micrometers. At 275mm in length, this calibration bar provides a fixed reference point for zero-setting and span checks across a wide measurement range. The included heat insulating handle prevents thermal expansion errors caused by hand contact during calibration, ensuring readings reflect the true dimensional value of the standard. Rated to an accuracy of 0.004 mm, this tool is suited for metrology labs, quality control departments, and precision machining environments where measurement traceability is required.

This calibration standard is designed for use with outside micrometers in shop floor and laboratory settings. It is appropriate for calibration technicians, quality assurance inspectors, and machinists who need to confirm micrometer accuracy before measurement runs or during scheduled instrument verification intervals. The 275mm working length makes it well suited for validating micrometers used on larger workpieces.

Key Features

• Spherical contact ends minimize alignment sensitivity during calibration checks
• Accuracy of 0.004 mm supports precise micrometer verification
• 275mm length accommodates calibration of larger-range outside micrometers
• Included heat insulating handle reduces thermal growth from hand contact
• Single-piece construction provides a stable, reliable dimensional reference

Compatibility

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

Installation Notes

Calibration standards should be handled only by the insulating handle to prevent body heat from affecting the reference dimension. Allow the standard to thermally stabilize to the ambient measurement environment before use, particularly when moving from storage to a climate-controlled lab. Follow your facility's calibration procedures and applicable metrology standards when recording instrument verification results. Store the standard in its case when not in use to protect contact surfaces from damage.