Starrett 92913 Steel Gage Block Set Grade 0 81 Piece

Product Description

The STARRETT 92913 is an 81-piece rectangular steel gage block set manufactured to Grade 0 accuracy per ASME B89.1.9-2002. These blocks cover a measurement range of 0.05 to 4 inches across four step increment groups, giving technicians the combination capability to build a wide range of precise reference dimensions. A NIST NVLAP traceability certification is included, making the set suitable for calibration labs, tool rooms, and quality control environments where documented measurement standards are required. Precision machinists, metrology technicians, and QC inspectors are the primary users of this set.

This gage block set is appropriate for both shop-floor and laboratory use where high-accuracy dimensional reference is needed. The four increment groups include 49 blocks in 0.001-inch steps, 19 blocks in 0.05-inch steps, 9 blocks in 0.0001-inch steps, and 4 blocks in 1.000-inch steps, providing flexible combination coverage across the full range. Typical applications include setting comparators, calibrating micrometers and calipers, and verifying fixture dimensions in manufacturing and metrology settings.

Key Features

• Grade 0 accuracy per ASME B89.1.9-2002 for high-precision measurement reference
• 81-piece set spanning 0.05 to 4 inches across four step increment groups
• Includes 49 blocks at 0.001-inch increments, 9 at 0.0001-inch increments, 19 at 0.05-inch increments, and 4 at 1.000-inch increments
• Rectangular steel construction for durability and long-term dimensional stability
• NIST NVLAP traceability certification included for documented compliance

Compatibility

Designed as a general-purpose Grade 0 gage block set compatible with standard wringing and stacking practices used with rectangular steel gage blocks in tool room, calibration lab, and quality control applications.

Installation Notes

Gage blocks should be handled by metrology or QC personnel trained in proper wringing technique to avoid damage to lapped surfaces. Store blocks in a controlled-temperature environment and allow thermal stabilization before use to ensure measurement accuracy. Clean blocks with an appropriate gage oil or calibration-grade solvent before and after use. Do not drop or strike blocks against hard surfaces, as this will damage the precision lapped faces.