Mitutoyo 516-930-26 Steel Gage Block Set Grade 0 9 Piece

Product Description

The MITUTOYO 516-930-26 is a 9-piece rectangular steel gage block set manufactured to Grade 0 accuracy, suitable for precision measurement and calibration work in machine shops, toolrooms, and quality control environments. The set spans from 1/16 inch (0.0625 inches) up to 2 inches, covering a practical range of reference dimensions. Tolerances are tiered by size: 5 micro-inches for blocks in the 0.0625 to 0.3-inch range, 6 micro-inches for blocks in the 0.5 to 1-inch range, and 8 micro-inches for the 2-inch block. A NIST Traceability Certification is included with the set, supporting documented calibration chains required in many shop and inspection environments.

This gage block set is used by machinists, metrologists, and quality technicians for setting comparators, calibrating micrometers and calipers, and establishing reference standards on surface plates. Grade 0 accuracy makes it appropriate for toolroom-level inspection work and instrument calibration rather than master reference or laboratory-grade applications. Each block in the set is individually serialized, allowing traceability to be maintained at the individual piece level. The set is built to ASME B89.1.9-2002 standards, which govern dimensional tolerances and surface finish for gage blocks used in industrial and metrology applications.

Key Features

• Grade 0 accuracy per ASME B89.1.9-2002 for toolroom and inspection use
• 9-piece set covering 1/16 inch to 2 inches in rectangular form
• Tiered tolerances: 5, 6, and 8 micro-inches depending on block size
• NIST Traceability Certification included with the set
• Each block individually serialized for traceable calibration records
• Steel construction for durability and dimensional stability

Compatibility

Designed as an OEM-style reference standard for use with standard gage block accessories and holders compatible with rectangular-style gage blocks meeting ASME B89.1.9-2002 dimensional specifications.

Installation Notes

Gage blocks are handled and set up by qualified machinists, metrologists, or quality technicians — not installed in the conventional sense. Blocks should be stored in their case when not in use and kept free of debris, moisture, and fingerprints to preserve wringing surfaces and dimensional accuracy. Before use, allow blocks to thermally stabilize at the measurement environment temperature, typically 68 degrees F per ASME standards. Never force-wring blocks or use them on abrasive or contaminated surfaces, as this will damage the lapped faces and degrade accuracy.