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The SPI 15-008-6 is a rectangular steel gage block measuring 0.1003 inches, manufactured to Grade AS-1 accuracy. Gage blocks are precision reference standards used to calibrate measuring instruments and set comparators to a known dimension. This block is made from steel and includes NIST certification, confirming traceable accuracy to national measurement standards. Grade AS-1 meets stringent dimensional tolerance requirements, making it appropriate for quality control labs, tool rooms, and precision inspection environments. Machinists, metrologists, and quality technicians rely on certified gage blocks to maintain measurement integrity across production and inspection operations.
This gage block is suited for use in machine shops, manufacturing facilities, and metrology labs where precise linear reference dimensions are required. It serves as a calibration reference for micrometers, calipers, height gages, and comparator stands. The 0.1003-inch size is a standard increment block used in combination sets to build up composite dimensions for setup and inspection tasks. Individual blocks like this are also used as replacements within existing gage block sets when a single piece requires recertification or replacement.
Designed as an OEM-style replacement or individual addition to standard rectangular gage block sets used in precision metrology and inspection applications.
Gage blocks are handled and used by metrology technicians and precision machinists. Before use, clean all mating surfaces thoroughly to remove oil, grit, or debris that could affect accuracy or damage the lapped faces. When wringing blocks together, use a light sliding motion rather than forcing surfaces. Store in a protective case away from temperature extremes to preserve dimensional stability and protect the certification record.
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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