Mitutoyo 167-145 Micrometer Setting Standard Bar 5 Inch

The Mitutoyo 167-145 is a precision micrometer setting standard bar designed for accurate zero-point calibration of outside micrometers. This 5-inch length standard features a 0.31-inch diameter construction with flat, lapped measuring faces that provide precise reference surfaces for micrometer calibration and verification.

Key Features:

• 5-inch nominal length for calibrating micrometers in the 4-5 inch range
• 0.31-inch diameter for easy handling and storage
• Flat and lapped measuring faces ensure accurate reference surfaces
• Heat-insulating handle prevents thermal expansion from body heat during use
• Precision-ground and hardened steel construction
• Essential calibration tool for maintaining micrometer accuracy

This setting standard is an indispensable tool for quality control, inspection departments, and precision machining operations where micrometer accuracy must be verified and maintained. The heat-insulating handle design minimizes measurement error caused by thermal transfer from the operator's hand, ensuring consistent and reliable calibration results.