Starrett 92939 Steel Gage Block Set Grade 0 9 Piece

Product Description

The STARRETT 92939 is a 9-piece rectangular steel gage block set manufactured to Grade 0 accuracy. These blocks are used to establish precise dimensional reference points during calibration, inspection, and machine setup work. The set spans a range of 1/16 to 2 inches and conforms to ASME B89.1.9-2002 dimensional standards. A NIST NVLAP traceability certification is included, making this set suitable for quality-controlled environments where documented measurement traceability is required. Machinists, metrologists, and precision tool calibration technicians are the primary users of this type of tooling.

This gage block set is used in manufacturing, maintenance, and inspection settings where tight dimensional tolerances must be verified or set. Typical applications include calibrating measuring instruments, setting up machine tools, and verifying part dimensions against a known reference. The Grade 0 accuracy classification positions this set for general-purpose precision work in both shop floor and calibration lab environments. The rectangular block geometry is the standard form for most bench and gauge calibration tasks.

Key Features

• Grade 0 accuracy per ASME B89.1.9-2002 for reliable dimensional reference
• 9-piece set covering 1/16 to 2 inches range
• Steel construction for durability and long-term dimensional stability
• Includes NIST NVLAP traceability certification for documented calibration compliance
• Rectangular block geometry compatible with standard gage block accessories and holders

Compatibility

Designed as an OEM-style precision reference set compatible with standard rectangular gage block holders, surface plates, and calibration fixtures used in general metrology and machine shop applications.

Installation Notes

Gage blocks should be handled by qualified calibration or metrology technicians using clean, lint-free gloves to prevent surface contamination and corrosion. Store blocks in the provided case when not in use and keep them away from magnetic fields and temperature extremes that could affect accuracy. Wring blocks together using a clean, flat surface and approved wringing technique to achieve proper contact before use. Follow facility calibration procedures and applicable metrology standards when placing these blocks into service as reference standards.