Mitutoyo 167-144 Micrometer Calibration Standard Bar 4 Inch

The Mitutoyo 167-144 is a precision micrometer calibration standard bar designed for accurate zero-point setting and verification of outside micrometers. This 4-inch standard bar features a 0.31-inch diameter and serves as an essential tool for maintaining measurement accuracy in precision machining and quality control environments.

Key Features:

• 4-inch length calibration standard for outside micrometer setup and verification
• 0.31-inch diameter provides stable reference surface
• Precision-ground flat and lapped measuring faces ensure accuracy
• Heat-insulating handle prevents thermal expansion from body heat transfer
• Hardened and stabilized steel construction for long-term dimensional stability
• Ideal for calibrating and setting zero on 3-4 inch outside micrometers

This calibration standard is an indispensable accessory for anyone using Mitutoyo or other brand outside micrometers, ensuring your measurements remain accurate and traceable. The heat-insulating handle design minimizes the risk of thermal distortion during handling, which is critical for maintaining measurement integrity at the sub-thousandth inch level.