Mitutoyo 611217-541 Steel Gage Block 0.75 in Grade AS-1

Product Description

The MITUTOYO 611217-541 is a rectangular steel gage block measuring 0.75 inches in overall length, manufactured to ASME Grade AS-1 accuracy standards. Gage blocks are precision-ground reference standards used to calibrate measuring instruments, set comparators, and verify dimensional tolerances in metrology and machining environments. At Grade AS-1, this block meets stringent dimensional accuracy requirements suitable for inspection-room and toolroom use. Each unit ships with a Certificate of Inspection, confirming traceability to recognized measurement standards. Machinists, quality control technicians, and metrologists rely on blocks like this to maintain measurement integrity across production and inspection operations.

This gage block is suited for use in toolrooms, quality labs, and precision manufacturing environments where dimensional verification is required. It serves as a reference standard for calibrating micrometers, digital calipers, height gages, and comparator stands. The 0.75-inch size covers a common dimensional reference point in both inch-based measurement setups and mixed-standard environments. It is appropriate for both shop-floor and controlled-environment inspection work at the Grade AS-1 accuracy level.

Key Features

• Grade AS-1 accuracy per ASME standards for high-precision dimensional reference
• 0.75-inch overall length ground to 5-decimal inch specification (0.75000 inches)
• Rectangular steel construction for durability and long-term dimensional stability
• Includes Certificate of Inspection for traceability documentation
• Single-piece packaging suitable for individual instrument calibration setups

Compatibility

Designed as an ASME-compliant Grade AS-1 rectangular steel gage block for use with standard gage block accessories, holders, and wringing sets in inch-based metrology applications.

Installation Notes

Gage blocks are handled and serviced by metrology technicians, quality control personnel, and precision machinists. Before use, clean all mating surfaces with an appropriate solvent to remove oils and debris that can affect accuracy. Store blocks in a controlled environment away from temperature extremes and humidity to prevent corrosion and dimensional drift. Never drop or impact the block surfaces, as even minor damage to the lapped faces will compromise measurement accuracy.