Spi 14-234-9 Micrometer Calibration Standard 2 Inch

Product Description

The SPI 14-234-9 is a precision micrometer calibration standard designed for use with screw thread micrometers. It provides a certified reference point to verify and maintain measurement accuracy to within 0.0001 inches (0.003 mm), which is essential for maintaining traceable calibration in any precision measurement workflow. At 2 inches in length, it covers a common measurement range used in threading and fastener inspection. The included heat insulating handle allows the technician to hold the standard without transferring body heat to the gauge body, which could otherwise introduce thermal expansion error into the calibration reading. Calibration professionals, machinists, and metrology technicians rely on this type of reference standard as part of a regular instrument verification routine.

This calibration standard is intended for bench use in machine shops, tool rooms, quality control labs, and manufacturing environments where screw thread micrometers must be checked against a known reference. It is particularly suited for settings where SPI screw thread micrometers are in regular use and require periodic verification to maintain measurement integrity. The 2-inch size makes it appropriate for thread measurement applications that fall within that range. It ships as a single unit and is ready for immediate use upon receipt.

Key Features

• Accuracy to 0.0001 inches (0.003 mm) for precise calibration verification
• 2-inch length matches common screw thread micrometer measurement range
• Includes heat insulating handle to prevent thermal expansion error during handling
• Calibrated from the factory for immediate use as a reference standard
• Compatible with SPI screw thread micrometers

Compatibility

Designed for use with SPI screw thread micrometers as a calibration reference standard.

Installation Notes

This standard is handled and used by calibration technicians or machinists during instrument verification procedures, not installed in a system. Always allow the standard and the micrometer to thermally stabilize in the same environment before performing a calibration check. Handle the gauge body using the provided heat insulating handle to avoid introducing measurement error from hand warmth. Store the standard in a protective case away from chips, coolant, and abrasive contaminants when not in use.