Spi MS160712019 Micrometer Calibration Standard 19 in

Product Description

The SPI MS160712019 is a spherical end micrometer calibration standard designed for verifying and calibrating outside micrometers in professional metrology and machinist applications. Measuring 19 inches in length, this calibration bar delivers accuracy up to 0.0002 inch, making it suitable for precision measurement environments where tight tolerances are critical. The unit arrives pre-calibrated and includes a heat insulating handle that prevents thermal expansion errors caused by hand contact during use. Licensed metrologists, quality control technicians, and tool room machinists rely on calibration standards like this to maintain measurement traceability and tool reliability.

This calibration standard is intended for use with outside micrometers in shop floor, tool room, and laboratory settings. Its 19-inch length makes it appropriate for calibrating larger-range micrometers used in heavy machining, aerospace, and precision manufacturing environments. The spherical end geometry ensures consistent, repeatable contact points during calibration, reducing operator-induced measurement variation. The included heat insulating handle is a practical feature for bench use where the standard must be held for extended periods.

Key Features

• 19-inch overall length accommodates larger micrometer calibration ranges
• Accuracy up to 0.0002 inch for precise verification work
• Spherical end design provides consistent, repeatable contact geometry
• Pre-calibrated and ready for immediate use
• Includes heat insulating handle to minimize thermal expansion error during handling

Compatibility

Designed for use with outside micrometers. Verify that your micrometer range accommodates a 19-inch calibration standard before use.

Installation Notes

Calibration standards should be handled and stored by qualified metrology or tool room personnel following established calibration procedures. Always allow the standard to acclimate to the ambient temperature of the measurement environment before use to minimize thermal expansion effects. Use the included heat insulating handle when holding the standard during calibration to avoid introducing body heat into the bar. Store in the supplied case or a clean, protected environment when not in use.