Mitutoyo 611163-541 Steel Gage Block 0.123 in Grade AS-1

Product Description

The MITUTOYO 611163-541 is a rectangular steel gage block ground and lapped to a nominal length of 0.123 inches at Grade AS-1 accuracy. Gage blocks are precision length standards used to calibrate measuring instruments, set comparators, and verify dimensional tolerances in machining and inspection environments. This block meets ASME standards and ships with a Certificate of Inspection, confirming traceable dimensional accuracy. It is a single-piece block intended for use in toolrooms, quality labs, and on the shop floor by metrology technicians and precision machinists who require reliable length references.

This gage block is suited for dimensional inspection tasks in manufacturing and toolroom settings where AS-1 grade accuracy is specified. Typical applications include setting dial indicators, height gages, and snap gages, as well as validating CNC setups and incoming inspection of machined parts. The rectangular form allows stacking with other gage blocks in a wringing set when precise composite lengths are needed.

Key Features

• Grade AS-1 accuracy per ASME standards for reliable dimensional reference
• Steel construction provides durability and resistance to wear during repeated use
• Nominal length of 0.123 inches lapped to close tolerances
• Includes Certificate of Inspection for traceability documentation
• Rectangular geometry supports wringing with other gage blocks

Compatibility

Designed as an OEM-style rectangular gage block compatible with standard gage block sets and accessories requiring AS-1 grade steel blocks in the inch measurement system.

Installation Notes

Gage blocks are handled and set by metrology technicians and quality inspection personnel rather than installed in the traditional sense. Always clean block surfaces with lint-free cloth and approved cleaning solvent before use to prevent contamination that can affect accuracy. Store blocks in their case when not in use to protect lapped surfaces from corrosion and mechanical damage. Do not drop or stack blocks carelessly, as impact damage to the lapped faces will compromise dimensional accuracy.