Mitutoyo 611129-541 Steel Gage Block 0.1009 Inches AS-1

Product Description

The MITUTOYO 611129-541 is a rectangular steel gage block ground and lapped to a nominal length of 0.1009 inches and certified to AS-1 accuracy grade per ASME standards. Gage blocks of this type serve as dimensional reference standards used to calibrate measuring instruments, set comparators, and verify machined part tolerances on the shop floor or in a metrology lab. Each block ships with a Certificate of Inspection, confirming it has been measured and documented against traceable standards. This block is handled and stored by quality technicians, metrology personnel, and precision machinists who require a reliable, stable reference for tight-tolerance work.

This gage block is suited for use in inspection rooms, tool rooms, and production environments where dimensional accuracy must be verified or transferred to a measuring instrument. It functions as a single-block reference for the 0.1009-inch nominal dimension and can be wrung together with other gage blocks in a set to build up compound measurements. Typical applications include calibrating micrometers, dial indicators, and height gages, as well as fixture setup and first-article inspection in precision manufacturing.

Key Features

• AS-1 accuracy grade per ASME standards for precision dimensional reference work
• Rectangular steel construction provides durability and stable thermal characteristics
• Nominal length of 0.1009 inches for single-block or wrung-stack measurement builds
• Includes Certificate of Inspection for traceability documentation
• Single-piece packaging suitable for replacing or supplementing an existing gage block set

Compatibility

Designed as an OEM-style individual replacement or supplemental gage block compatible with standard rectangular gage block sets used in ASME-compliant metrology and inspection applications.

Installation Notes

Gage blocks are handled by metrology technicians and quality inspection personnel. Always clean block surfaces with an appropriate solvent and lint-free cloth before use to remove oils and debris that can affect measurement accuracy. When wringing blocks together, apply light lateral pressure to allow surface adhesion — never force or snap blocks together, as this can damage lapped surfaces. Store blocks in their case with protective coating applied to prevent corrosion.