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The VALUE COLLECTION 630-21046 is a rectangular steel gage block measuring 0.104 inches, manufactured to Grade 0 accuracy standards. Gage blocks are precision-ground reference standards used to calibrate measuring instruments, set comparators, and verify dimensional tolerances in machine shops, metrology labs, and quality control environments. This block includes NIST certification, confirming its dimensional accuracy has been verified against national measurement standards. At 0.05 pounds, it is a compact, single-piece block suited for bench-level precision work. Installation and use require clean, burr-free contact surfaces and proper wringing technique to achieve reliable stacking and measurement.
This gage block is intended for use in precision measurement applications across manufacturing, toolroom, and inspection environments. Grade 0 blocks are appropriate for applications requiring high accuracy, including calibration of micrometers, calipers, and height gages, as well as setup work on surface plates. The block is sold as a single unit and is suitable for use as a standalone reference standard or as part of a gage block set.
Designed as an OEM-style reference standard compatible with standard rectangular gage block sets and accessories used in general metrology and machine shop inspection applications.
Gage blocks should be handled by metrology technicians or qualified toolroom personnel familiar with precision measurement practices. Before use, clean all mating surfaces with an appropriate solvent to remove oil, debris, and oxidation. When stacking, use proper wringing technique to achieve a stable, accurate combination. Store blocks in a protective case away from moisture and temperature extremes to preserve surface finish and dimensional stability.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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