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The MITUTOYO 611127-541 is a rectangular steel gage block ground to a nominal length of 0.1007 inches and certified to ASME Grade AS-1 accuracy. Gage blocks of this type serve as dimensional reference standards used to calibrate measuring instruments, set comparators, and verify part dimensions on the shop floor or in a metrology lab. Each block ships with a Certificate of Inspection, confirming that the piece meets the stated accuracy grade before it leaves the factory. Machinists, quality technicians, and calibration specialists rely on this class of tooling to maintain measurement traceability across production and inspection operations.
This gage block is suited for precision measurement applications in manufacturing, tool rooms, and quality control environments. It functions as a length standard for instrument calibration, height-gauge setup, and surface-plate inspection work. The Grade AS-1 designation places it in the working-grade tier under ASME B89.1.9, making it appropriate for regular production and inspection use where tight dimensional verification is required.
Designed as an ASME-compliant Grade AS-1 rectangular steel gage block for use with standard gage block accessories including holders, jaws, and scribers that accept rectangular-style blocks.
Gage blocks are precision metrology tools handled by calibration technicians and quality control personnel. Before use, clean all mating surfaces with an appropriate solvent and lint-free cloth to remove oils, debris, and burrs that could affect accuracy or cause wringing failures. Store blocks in their case when not in use to prevent corrosion and surface damage. Do not use gage blocks as clamping fixtures or cutting references; they are reference standards only.
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