Mitutoyo 611215-531 Steel Gage Block 0.55 in Grade 0

Product Description

The MITUTOYO 611215-531 is a rectangular steel gage block sized at 0.55 inches, manufactured to Grade 0 accuracy standards per ASME specifications. Gage blocks are precision-ground reference standards used to calibrate measuring instruments, verify part dimensions, and set up inspection fixtures. This block delivers the tight dimensional tolerances required for tool room, quality lab, and production floor metrology work. Each unit ships with a Certificate of Inspection, confirming dimensional conformance at the point of manufacture. Licensed calibration technicians, quality engineers, and precision machinists are the primary users of this type of reference standard.

This gage block is suited for dimensional verification tasks in both light manufacturing and precision inspection environments. It is used as a length reference when calibrating micrometers, dial indicators, height gages, and similar measuring instruments. The steel construction and Grade 0 accuracy rating make it appropriate for applications where tight tolerance confirmation is required. It is sold individually, making it a practical replacement or addition to an existing gage block set.

Key Features

• Grade 0 accuracy per ASME standards for precision metrology applications
• 0.55-inch nominal size, precision ground to tight dimensional tolerances
• Steel construction for durability and dimensional stability
• Includes Certificate of Inspection for traceability documentation
• Rectangular form compatible with standard gage block accessories and holders

Compatibility

Designed as a Grade 0 ASME-conforming rectangular steel gage block suitable for use with standard gage block wringing sets, holders, and accessories common to precision measurement and calibration work.

Installation Notes

Gage blocks are handled and stored by calibration technicians and metrologists following standard metrology practices. Before use, clean mating surfaces with an appropriate solvent and allow the block to thermally stabilize at the measurement environment temperature, typically 68 degrees F per ASME standards. Avoid contact with abrasive surfaces and store the block in its protective case when not in use to prevent corrosion and surface damage.