Mitutoyo 611183-541 Steel Gage Block 0.143 in Grade AS-1

Product Description

The MITUTOYO 611183-541 is a rectangular steel gage block measuring 0.143 inches in length, manufactured to ASME Grade AS-1 accuracy standards. Gage blocks are precision reference standards used to calibrate measuring instruments and set comparators to a known dimension. This block is machined from steel and includes a Certificate of Inspection, verifying that it meets the dimensional tolerances required for Grade AS-1 classification. Metrology technicians, quality control inspectors, and tool room machinists rely on gage blocks like this one for high-accuracy measurement verification in production and laboratory environments.

This gage block is suited for use in dimensional calibration labs, machine shops, and quality assurance departments where traceable measurement standards are required. It functions as a length reference for setting micrometers, height gauges, and other precision instruments. Its compact 0.143-inch size makes it a practical addition to a gage block set or a standalone reference standard for specific inspection routines. The included Certificate of Inspection supports documentation requirements in ISO-compliant quality systems.

Key Features

• Grade AS-1 accuracy per ASME standards, suitable for calibration and inspection use
• Steel construction for durability and dimensional stability
• 0.143-inch nominal length with 5-decimal precision specification
• Includes Certificate of Inspection for traceability documentation
• Rectangular block geometry compatible with standard wringing techniques

Compatibility

Designed as an OEM-style precision reference standard for use with standard rectangular gage block accessories including holders, jaws, and scribing blocks commonly used in dimensional metrology applications.

Installation Notes

Gage blocks should be handled by metrology technicians or qualified inspection personnel following established calibration procedures. Clean and degrease all mating surfaces before wringing blocks together to avoid measurement error and surface damage. Store blocks in their protective case when not in use to prevent corrosion and surface wear. Periodic recalibration against a national standard is recommended to maintain traceability.