Mitutoyo 611221-541 Steel Gage Block 0.21 in Grade AS-1

Product Description

The MITUTOYO 611221-541 is a rectangular steel gage block measuring 0.21 inches in overall length, manufactured to ASME Grade AS-1 accuracy standards. Gage blocks are precision reference standards used to calibrate measuring instruments, set up comparators, and verify dimensional tolerances in production and metrology environments. This block ships with a Certificate of Inspection confirming it meets the stated accuracy grade. Grade AS-1 represents a high-accuracy classification suitable for calibration lab use and critical dimensional verification tasks. Metrologists, quality technicians, and precision machinists rely on blocks of this grade when traceable measurement accuracy is required.

This gage block is used in dimensional metrology applications across manufacturing, tool and die, and quality assurance settings. It serves as a reference standard when calibrating micrometers, calipers, height gages, and other precision instruments. The 0.21-inch size fits into standard gage block set configurations and can be wrung with other blocks to build up specific measurement values. It is appropriate for both shop-floor and laboratory use wherever ASME-conforming reference standards are specified.

Key Features

• Grade AS-1 accuracy per ASME standards for high-precision metrology applications
• Rectangular steel construction for durability and dimensional stability
• 0.21-inch nominal size for building composite gage block stacks
• Includes Certificate of Inspection for traceability documentation
• UNSPSC Code 41111600 for procurement and catalog classification compliance

Compatibility

Designed as an OEM-style precision reference standard compatible with standard rectangular gage block sets and wring-compatible accessories used in ASME-conforming dimensional metrology setups.

Installation Notes

Gage blocks are handled and stored by metrology technicians and quality personnel following established calibration procedures. Before use, clean mating surfaces thoroughly to remove oils, debris, and burrs that can affect wringing and measurement accuracy. Store blocks in their protective case when not in use to prevent corrosion and surface damage. Do not drop or stack blocks carelessly, as surface damage will compromise the accuracy grade.