Starrett 92845 Grade 0 Steel Gage Block Set 81 Piece

Product Description

The STARRETT 92845 is an 81-piece steel gage block set manufactured to Grade 0 accuracy and conforming to ASME B89.1.9-2002. The set covers a range of 0.05 to 4 inches using four step-increment series: 49 blocks at 0.001-inch increments, 19 blocks at 0.05-inch increments, 9 blocks at 0.0001-inch increments, and 4 blocks at 1.000-inch increments. NIST NVLAP traceability certification is included with the set. Precision metrology technicians, tool-and-die makers, machinists, and quality control inspectors use this set to calibrate measuring instruments, set comparators, and verify dimensional tolerances on machined components.

This gage block set is suited for dimensional inspection and calibration work in machine shops, tool rooms, and quality laboratories. The broad increment range — from fine 0.0001-inch steps to full 1-inch blocks — allows technicians to build virtually any reference dimension within the set's range. The Grade 0 classification indicates a high level of flatness, parallelism, and length accuracy appropriate for production and inspection applications where measurement traceability to national standards is required.

Key Features

• 81 total pieces covering 0.05 to 4 inches in four increment series
• Grade 0 accuracy per ASME B89.1.9-2002
• Fine 0.0001-inch increment blocks for high-resolution reference stacking
• Steel construction for durability and consistent dimensional stability
• NIST NVLAP traceability certification included

Compatibility

Designed as a general-purpose reference standard compatible with standard gage block accessories and holders used in dimensional metrology and calibration applications.

Installation Notes

Gage blocks should be handled only by trained metrology or machining personnel using clean, lint-free gloves or finger cots to prevent contamination and corrosion. Before wringing blocks together, clean each mating surface thoroughly with an approved instrument-grade solvent and a lint-free cloth. Store blocks in the provided case in a temperature-stable environment and allow thermal soak time when moving between environments with different temperatures. Never drop or strike blocks against hard surfaces, as this will damage the lapped faces and invalidate calibration.