Spi MS150825013 Micrometer Calibration Standard 1 Inch

Product Description

The SPI MS150825013 is a precision micrometer calibration standard designed for verifying and setting screw thread micrometers used in dimensional inspection work. Measuring 1 inch in length, this calibration standard delivers accuracy up to 0.00005 inches (0.001 mm), making it suitable for high-tolerance measurement verification in machine shops, calibration labs, and precision manufacturing environments. The standard ships calibrated and includes a heat insulating handle to prevent thermal expansion from hand contact, which can affect measurement accuracy at this precision level. Metrology technicians and quality control professionals are the primary users of this tool.

This calibration standard is intended for use with SPI screw thread micrometers in applications where thread form measurement accuracy must be periodically verified. It is well suited to shop floor calibration routines, incoming inspection setups, and laboratory metrology work where traceable standards are required to maintain measurement integrity. The 1-inch length covers a common range in threaded fastener and precision component inspection.

Key Features

• 1 inch length covers a standard micrometer calibration range
• Accuracy up to 0.00005 inches (0.001 mm) for high-precision verification
• Ships factory calibrated, ready for immediate use
• Includes heat insulating handle to minimize thermal measurement error from hand contact
• Designed specifically for use with SPI screw thread micrometers

Compatibility

Designed for use with SPI screw thread micrometers as stated by the manufacturer.

Installation Notes

Calibration standards should be handled using the included heat insulating handle at all times to prevent body heat from introducing dimensional error. Allow the standard to thermally stabilize to the ambient measurement environment before use, particularly when moving between temperature-controlled and shop floor areas. Calibration work should be performed by qualified metrology personnel following applicable measurement and calibration procedures.