Product Description
The MITUTOYO 167-153 is a flat end micrometer calibration standard used to verify and maintain the accuracy of outside micrometers in professional metrology and precision measurement work. At 13 inches in length, it provides a reference span suitable for checking larger-range outside micrometers. Accuracy is rated at 0.00025 inches, ensuring that calibration checks meet tight tolerance requirements. The unit is factory-calibrated and ships ready for use. A heat insulating handle is included to minimize thermal expansion errors caused by hand contact during measurement, which is critical when working at tenths-level tolerances.
This calibration standard is intended for use in tool rooms, calibration labs, machine shops, and quality control environments where outside micrometers require periodic verification. It suits applications where gauge blocks or ring gauges are impractical for long-span checks. Technicians and metrologists use standards like the 167-153 as part of routine instrument calibration protocols to maintain traceability and measurement integrity across production and inspection operations.
Key Features
- 13-inch length provides reference span for large-range outside micrometer calibration
- Accuracy rated at 0.00025 inches for tenths-level verification work
- Flat end geometry for consistent, repeatable anvil contact
- Factory-calibrated and ready for immediate use
- Includes heat insulating handle to reduce thermal growth error during handling
Compatibility
Designed for use with outside micrometers requiring a 13-inch calibration reference standard.
Installation Notes
Calibration standards should be handled only by qualified metrologists or trained calibration technicians. Always allow the standard to thermally stabilize to the measurement environment before use, and handle exclusively by the heat insulating handle to avoid transferring body heat to the gauge body. Store in the provided case away from vibration, moisture, and temperature extremes when not in use.
Technical Specifications
- Length: 13 inches
- Accuracy: 0.00025 inches
- End Shape: Flat
- Calibrated: Yes
- Heat Insulating Handle Included: Yes
- For Use With: Outside Micrometer
- Weight: 1 pound
- UNSPSC Code: 41111600
Standard Information
- Brand: MITUTOYO
- Manufacturer Part Number: 167-153
