Product Description
The MITUTOYO 167-152 is a flat end micrometer calibration standard designed to verify and maintain the accuracy of outside micrometers. Measuring 12 inches in length, this reference bar provides a known dimension against which technicians can check micrometer spindle alignment and measurement accuracy. Calibrated to an accuracy of 0.00025 inches, it delivers the tight tolerance needed for precision measurement verification in tool rooms, calibration labs, and production environments. A heat insulating handle is included to prevent thermal expansion from body heat from affecting the reference measurement during use.
This calibration standard is used in metrology and quality control settings where outside micrometer accuracy must be confirmed before use on critical parts. It is suited for shops performing routine tool calibration, gauge certification programs, or incoming inspection workflows. Machinists, quality technicians, and calibration specialists working with large-range outside micrometers will find this standard appropriate for 12-inch measurement verification tasks.
Key Features
- 12-inch reference length for calibrating large-range outside micrometers
- Calibrated accuracy to 0.00025 inches for tight tolerance verification
- Flat end design for consistent, repeatable contact with micrometer anvil and spindle
- Includes heat insulating handle to minimize thermal expansion error during use
- Factory calibrated ready to use as a reference standard out of the package
Compatibility
Designed for use with outside micrometers requiring a 12-inch calibration reference. Consult the micrometer manufacturer specifications to confirm appropriate reference bar length before use.
Installation Notes
Calibration standards are handled by calibration technicians or qualified metrology personnel. Always use the heat insulating handle when holding the standard to avoid transferring body heat to the bar, which can affect dimensional accuracy. Store the standard in its protective case when not in use to prevent surface damage to the reference faces. Follow your facility calibration procedures and any applicable ISO or ANSI gauge calibration standards when performing micrometer verification.
Technical Specifications
- Length: 12 inches
- Accuracy: 0.00025 inches
- Calibrated: Yes
- End Type: Flat
- Heat Insulating Handle: Included
- Weight: 1 pound
Standard Information
- Brand: MITUTOYO
- Manufacturer Part Number: 167-152
