Mitutoyo 611157-531 Steel Gage Block 0.117 in Grade 0

Product Description

The MITUTOYO 611157-531 is a rectangular steel gage block ground to a nominal length of 0.117 inches and certified to Grade 0 accuracy. Gage blocks are precision-ground reference standards used to calibrate measuring instruments, set comparators, and verify dimensional tolerances on the shop floor or in a calibration lab. This block conforms to ASME standards and ships with a Certificate of Inspection. Metrology technicians, quality control inspectors, and precision machinists rely on Grade 0 blocks when tight tolerance verification is required.

This gage block is suited for use in calibration labs, tool rooms, and quality inspection environments where traceable dimensional standards are required. It functions as a standalone reference block or as part of a gage block set for building up specific measurement values. Grade 0 represents a high level of flatness and parallelism, making it appropriate for applications demanding tighter tolerances than Grade 1 or Grade 2 blocks.

Key Features

• Nominal length of 0.117 inches ground to Grade 0 accuracy per ASME standards
• Steel construction for durability and consistent thermal stability in shop environments
• Rectangular form compatible with standard gage block accessories and holders
• Includes Certificate of Inspection for traceability documentation
• Single-block packaging suitable for replacing or supplementing an existing set

Compatibility

Designed as an OEM-style replacement or supplemental block compatible with standard rectangular gage block sets and accessories conforming to ASME gage block specifications.

Installation Notes

Gage blocks are handled by metrology technicians and quality control professionals. Clean contact surfaces thoroughly before wringing blocks together to avoid measurement error or surface damage. Store blocks in a protective case away from moisture and temperature extremes to maintain calibration integrity. Follow ASME B89.1.9 handling guidelines to preserve surface finish and accuracy grade.