Spi CMS141015003 Micrometer Calibration Standard 250mm

Product Description

The SPI CMS141015003 is a 250mm spherical end micrometer calibration standard designed to verify and maintain the accuracy of outside micrometers used in precision measurement applications. The calibration rod features a flat end configuration and includes a heat insulating handle that minimizes thermal transfer from the technician's hand, helping to preserve dimensional accuracy during the calibration process. With a stated accuracy of 0.0035 mm, this standard supports quality control routines where traceable dimensional verification is required. Metrologists, toolroom technicians, and quality assurance professionals rely on calibration standards like this one to confirm that measuring instruments are reading within acceptable tolerance before use on critical work.

This calibration standard is intended for use with outside micrometers in tool rooms, quality labs, and manufacturing environments where periodic instrument verification is part of standard metrology practice. The 250mm length makes it well suited for calibrating larger-range micrometers. The included heat insulating handle is a practical feature during bench use, reducing the risk of measurement error caused by thermal expansion from hand contact with the reference bar.

Key Features

• Accuracy of 0.0035 mm for reliable micrometer verification
• 250mm reference length covers larger micrometer ranges
• Spherical end profile for consistent contact point engagement
• Flat end shape as specified for standard reference use
• Heat insulating handle included to minimize thermal expansion error
• Compatible with standard outside micrometers

Compatibility

Designed for use with outside micrometers requiring a 250mm calibration reference standard.

Installation Notes

Calibration standards should be handled by qualified metrology or toolroom personnel familiar with instrument calibration procedures. Allow the standard to reach ambient temperature before use to avoid thermal expansion errors. Store in its protective case when not in use to prevent surface damage to the reference faces. Follow applicable calibration interval and traceability requirements per your facility's quality management system.