Mitutoyo 611185-541 Steel Gage Block 0.145 Inches AS-1

Product Description

The MITUTOYO 611185-541 is a rectangular steel gage block manufactured to AS-1 accuracy grade per ASME standards. Gage blocks serve as dimensional reference standards used to calibrate measuring instruments, set comparators, and verify part tolerances on the shop floor or in the metrology lab. This block measures 0.145 inches in nominal length and is constructed from steel for dimensional stability and wear resistance. Each unit ships with a Certificate of Inspection confirming it meets stated accuracy requirements. Licensed metrologists, machinists, and quality control technicians rely on blocks of this class for precision measurement work.

This gage block is suited for use in tool rooms, quality labs, and manufacturing environments where traceable dimensional references are required. It is appropriate for both bench-level calibration tasks and in-process inspection setups. The AS-1 accuracy grade makes it well-suited for applications demanding tighter tolerance verification than Grade 2 or Grade K blocks.

Key Features

• AS-1 accuracy grade per ASME standards for high-precision dimensional reference
• Rectangular steel construction provides stability and resistance to wear
• 0.145 inch nominal length for close-tolerance measurement setups
• Includes Certificate of Inspection for traceability documentation
• Single-piece packaging suitable for individual replacement or set supplementation

Compatibility

Designed as an OEM-style individual gage block for use in standard rectangular gage block sets and compatible with any comparator, surface plate setup, or calibration fixture accepting rectangular-style blocks.

Installation Notes

Gage blocks should be handled by quality control technicians or metrologists familiar with wringing technique and proper storage practices. Clean contact surfaces thoroughly before wringing to avoid damage or measurement error. Store blocks in a protective case away from humidity and temperature extremes to maintain dimensional integrity. Follow ASME B89.1.9 guidelines for handling, cleaning, and calibration intervals.