Mitutoyo 611222-541 Steel Gage Block 10 in Grade AS-1

Product Description

The MITUTOYO 611222-541 is a rectangular steel gage block measuring exactly 10.00000 inches in length and manufactured to ASME Grade AS-1 accuracy. Gage blocks are precision reference standards used to calibrate measuring instruments, verify dimensional accuracy, and set comparators in metrology labs, tool rooms, and manufacturing environments. This block ships with a Certificate of Inspection, confirming it meets the stated accuracy grade. Grade AS-1 represents a high-accuracy classification under ASME B89.1.9, making this block suitable for demanding inspection and calibration work where tight tolerances are required.

This gage block is intended for use in precision measurement applications across industrial, aerospace, automotive, and general manufacturing settings. It is typically handled by metrologists, quality technicians, toolmakers, and calibration lab personnel. The 10-inch nominal size makes it useful for setting large-range comparators and verifying instruments at extended lengths. It is sold individually and is suitable for use as a standalone reference standard or as part of a larger gage block set.

Key Features

• Grade AS-1 accuracy per ASME B89.1.9 for high-precision dimensional reference
• Nominal size of 10.00000 inches for large-range calibration and instrument setting
• Steel construction for durability and dimensional stability under typical shop conditions
• Includes Certificate of Inspection confirming conformance to stated accuracy grade
• Rectangular geometry compatible with standard gage block accessories and holders

Compatibility

Designed as an OEM-style precision reference standard suitable for use with comparators, surface plates, and calibration fixtures that accept rectangular gage blocks conforming to ASME B89.1.9.

Installation Notes

Gage blocks should be handled and stored by qualified metrology or quality personnel following standard gage block care procedures. Clean mating surfaces with an appropriate gage block cleaner before wringing or stacking. Store the block in its protective case when not in use to prevent corrosion and surface damage. Do not expose steel gage blocks to environments that accelerate oxidation without applying a suitable protective film.