Mitutoyo 167-155 Micrometer Calibration Standard 15in

Product Description

The MITUTOYO 167-155 is a flat end micrometer calibration standard designed for verifying and calibrating outside micrometers. At 15 inches in maximum length, this reference bar provides a stable, traceable measurement baseline for shop floor and metrology environments. Accuracy is rated to 0.00025 inches, supporting tight-tolerance verification work. The standard ships calibrated and includes a heat insulating handle to prevent thermal growth from hand contact during use, which is critical for maintaining measurement integrity at this level of precision. Calibration technicians, quality control inspectors, and tool room machinists are the primary users.

This calibration standard is intended for use with outside micrometers in precision measurement applications. It is suited to tool cribs, metrology labs, quality inspection stations, and production environments where micrometer accuracy must be periodically confirmed. The 15-inch length covers the upper range of standard outside micrometer sets, making it particularly useful for verifying large-frame micrometers used in heavy manufacturing, aerospace component inspection, and general precision machining operations.

Key Features

• Maximum length of 15 inches covers large-range outside micrometer verification
• Accuracy rated to 0.00025 inches for high-precision calibration work
• Ships pre-calibrated for immediate use upon receipt
• Includes heat insulating handle to minimize thermal expansion error during handling
• Flat end construction compatible with standard outside micrometer anvil and spindle faces

Compatibility

Designed for use with outside micrometers requiring a flat end calibration reference up to 15 inches in length.

Installation Notes

This is a calibration reference standard, not an installed component. Always hold the standard by the heat insulating handle to prevent body heat from causing thermal expansion that would affect measurement accuracy. Store the standard in its case away from temperature extremes and humidity. Calibration standards should be handled in accordance with ISO/IEC 17025 or applicable shop metrology procedures.