Mitutoyo 611225-531 Steel Gage Block 20 Inches Grade 0

Product Description

The MITUTOYO 611225-531 is a rectangular steel gage block measuring 20 inches in overall length, manufactured to Grade 0 accuracy. Gage blocks serve as dimensional reference standards used to calibrate measuring instruments, set comparators, and verify part dimensions in machining, inspection, and quality control environments. This block ships with a Certificate of Inspection confirming it meets ASME standards for Grade 0 tolerance. Grade 0 represents a high level of dimensional accuracy suitable for laboratory and precision inspection use. Metrology technicians, tool and die makers, and quality engineers are the primary users of blocks at this specification level.

This gage block is suited for precision metrology applications in tool rooms, calibration labs, and manufacturing inspection departments. At 20 inches, it covers larger dimensional reference requirements that shorter block sets do not address. It is used as a standalone reference standard or in combination with other gage blocks and accessories to build specific measurement lengths. Applications include setting height gages, verifying machine tool travel, and calibrating large-range measuring instruments.

Key Features

• Grade 0 accuracy per ASME standards for precision dimensional reference
• Rectangular steel construction for durability and dimensional stability
• 20-inch overall length covers large-range measurement requirements
• Includes Certificate of Inspection for traceability documentation
• ASME-compliant for use in regulated inspection and calibration environments

Compatibility

Designed as a standalone precision reference standard compatible with standard gage block accessories including holders, jaws, and scribers used in ASME-compliant metrology setups.

Installation Notes

Gage blocks are handled and stored by metrology technicians and quality control personnel. Blocks should be kept clean and free of burrs, corrosion, and debris before use. Store in the provided case away from temperature extremes, as thermal expansion affects dimensional accuracy. Wring surfaces together only after cleaning with an appropriate gage block cleaning solution to avoid damage to the lapped faces.