Mitutoyo 611187-531 Steel Gage Block 0.147 in Grade 0

Product Description

The MITUTOYO 611187-531 is a rectangular steel gage block ground to a nominal size of 0.147 inches and certified to Grade 0 accuracy. Gage blocks are precision reference standards used to calibrate measuring instruments, verify machine setups, and establish dimensional baselines in manufacturing and inspection environments. This block meets ASME standards and ships with a Certificate of Inspection confirming it conforms to Grade 0 tolerances. Grade 0 blocks are suited for high-precision measurement work on the shop floor and in quality labs. The block is machined from steel for durability and long-term dimensional stability.

This gage block is used in dimensional inspection, toolroom calibration, and machine setup verification. Applications include setting snap gages, height gages, and comparators, as well as validating surface plate setups. It is appropriate for both production environments and metrology labs requiring traceable reference standards. Machinists, quality technicians, and metrologists are the primary users. The single-block format allows it to be wrung with other blocks in a set or used standalone for a fixed reference dimension of 0.147 inches.

Key Features

• Grade 0 accuracy per ASME standards for high-precision reference work
• Rectangular steel construction provides durability and stable long-term dimensions
• Nominal size of 0.147 inches for precise dimensional reference
• Includes Certificate of Inspection confirming conformance to Grade 0 tolerances
• Compatible with wringing to other gage blocks for stacked-dimension setups

Compatibility

Designed as an OEM-style precision reference standard suitable for use with standard rectangular gage block sets and accessories conforming to ASME B89.1.9 gage block specifications.

Installation Notes

Gage blocks are handled and set up by quality technicians and metrologists; no installation tools are required in the conventional sense. Ensure contact surfaces are clean and free of burrs or contamination before wringing blocks together or placing them on a reference surface. Store blocks in their protective case when not in use to prevent corrosion and surface damage. Follow ASME B89.1.9 handling guidelines to maintain calibration integrity and traceability.