Mitutoyo 611166-541 Steel Gage Block 0.126 in Grade AS-1

Product Description

The MITUTOYO 611166-541 is a rectangular steel gage block measuring 0.126 inches in nominal length, manufactured to ASME Grade AS-1 accuracy. Gage blocks are precision-ground reference standards used to calibrate measuring instruments, set up comparators, and verify dimensional tolerances on the shop floor or in the metrology lab. Grade AS-1 represents a high level of dimensional accuracy suitable for calibration and inspection work. A Certificate of Inspection is included, providing documentation of the block's conformance to stated tolerances. Machinists, metrologists, and quality technicians are the primary users of this type of precision tooling.

This gage block is suited for dimensional reference applications in both production and inspection environments. It functions as a single-piece reference standard for setting dial indicators, height gages, snap gages, and similar instruments. It is appropriate for use in tool rooms, quality labs, and manufacturing settings where ASME-grade traceability is required. The 0.126-inch size makes it a useful individual block for incremental stacking sets or standalone setups requiring that specific dimension.

Key Features

• Grade AS-1 accuracy per ASME standards for calibration and inspection use
• Steel construction for durability and long-term dimensional stability
• Nominal size of 0.126 inches (5-decimal precision: 0.12600 inches)
• Includes Certificate of Inspection for traceability documentation
• Rectangular form compatible with standard gage block accessories and holders

Compatibility

Designed as a precision reference standard compatible with standard rectangular gage block accessories, holders, and wringing sets used in ASME-compliant metrology applications.

Installation Notes

Gage blocks are handled by metrology technicians and quality inspectors, not installed in mechanical systems. Keep contact surfaces clean and free of debris before wringing or use. Store blocks in their protective case when not in use to prevent corrosion and surface damage. Follow your facility's calibration recall schedule to maintain traceability.