Spi MS160712013 Micrometer Calibration Standard 13 in

Product Description

The SPI MS160712013 is a spherical end micrometer calibration standard designed for verifying and calibrating outside micrometers in precision measurement applications. The standard measures 13 inches in length and delivers accuracy up to 0.000250 inches, making it suitable for high-tolerance inspection work. It includes a heat insulating handle to prevent thermal expansion from hand contact during use, which helps maintain measurement integrity. Calibration standards like this one are used by quality control technicians, tool room machinists, and metrology professionals who need traceable reference points for their measuring instruments.

This calibration standard is used in machine shops, inspection labs, and manufacturing environments where micrometer accuracy must be verified at regular intervals. The spherical end geometry provides consistent contact geometry for repeatable reference measurements. Its 13-inch length accommodates larger-range outside micrometers commonly found in production and inspection settings. The included heat insulating handle allows the technician to hold the standard without transferring body heat to the bar, which is critical when working to sub-thousandth tolerances.

Key Features

• Accuracy up to 0.000250 inches for reliable high-precision calibration reference
• Spherical end geometry ensures consistent and repeatable contact with micrometer anvils
• 13-inch total length accommodates larger-range outside micrometers
• Includes heat insulating handle to minimize thermal error during use
• Pre-calibrated from the factory for immediate use in inspection or tool room settings

Compatibility

Designed for use with outside micrometers requiring a 13-inch calibration reference standard with spherical end contact.

Installation Notes

Calibration standards should be handled only by the insulating handle to prevent thermal growth from affecting measurement accuracy. Store the standard in its case when not in use and allow it to reach ambient temperature before taking reference measurements. Calibration intervals should follow the facility quality plan or applicable metrology standards. If the standard shows signs of wear, nicks, or damage on the contact surfaces, remove it from service and have it re-certified or replaced.