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The SPI 11-344-9 is a 9-piece rectangular steel gage block set manufactured to Grade 0 accuracy standards. Gage blocks are precision reference tools used to calibrate measuring instruments, verify part dimensions, and establish traceable measurement standards in machining and inspection environments. This set covers a range of 1/16 to 2 inches with a tolerance of 0.000008 inches, making it suitable for high-accuracy metrology work. Each block in the set is individually serialized and backed by a NIST traceability certification, supporting documentation requirements in quality-controlled and regulated shop environments.
This set is appropriate for use in precision machine shops, tool rooms, quality assurance labs, and calibration environments. It supports applications in dimensional inspection, surface plate work, and setup verification for machining operations. The 9-piece configuration provides a practical range of reference dimensions for general-purpose and production inspection use. NIST traceable certification makes this set compatible with ISO and AS9100 quality system documentation requirements where calibration traceability is mandatory.
Designed as a general-purpose precision reference tool compatible with standard surface plate inspection setups, gage block accessories, and metrology equipment that accepts rectangular-style gage blocks.
Gage blocks should be handled by qualified metrology technicians or machinist-level personnel familiar with wringing technique and proper block care. Store blocks in the provided case away from temperature extremes and humidity to prevent corrosion and dimensional drift. Clean blocks before and after use with an appropriate solvent and lint-free cloth. Do not drop or stack blocks loosely, as surface damage will affect calibration integrity.
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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