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The MITUTOYO 516-902-26 is an 81-piece rectangular steel gage block set covering a measurement range of 0.05 to 4 inches. It is used to establish precise dimensional references in calibration labs, machine shops, and quality control environments. The set meets ASME B89.1.9-2002 standards and ships with an inspection certificate confirming traceability. Tolerances vary by block size: 5 micro inches for blocks in the 0.05 to 0.4 inch range, 6 micro inches for 0.45 to 1 inch, 8 micro inches for 2 inch blocks, 10 micro inches for grade 0 blocks, and 12 micro inches for the top-end grade. Metrology technicians, machinists, and quality assurance professionals are the primary installers and users of this set.
This gage block set is suited for dimensional inspection, machine tool calibration, and layout work in both production and laboratory settings. Step increments include 49 blocks at 0.001 inch, 19 blocks at 0.05 inch, 9 blocks at 0.0001 inch, and 4 blocks at 1.000 inch, giving technicians broad stacking flexibility for building up precise measurements. Each block is individually serialized, supporting traceability requirements in ISO-compliant and AS9100 quality systems. The included wooden case keeps blocks organized and protected during storage and transport.
Designed as a general-purpose rectangular gage block set for use with standard gage block accessories including holders, jaws, and scribers conforming to ASME B89.1.9-2002 requirements.
Gage blocks are precision metrology instruments and should be handled by qualified metrology or quality assurance personnel. Before use, allow blocks to stabilize to ambient temperature to minimize thermal expansion errors. Clean contact surfaces with an appropriate gage block cleaning solution before wringing blocks together. Store blocks in the provided wooden case when not in use to prevent corrosion and surface damage.
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