Mitutoyo 611175-541 Steel Gage Block 0.135 in Grade AS-1

Product Description

The MITUTOYO 611175-541 is a rectangular steel gage block measuring 0.135 inches in 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 machine shops, metrology labs, and quality control environments. Each block includes a Certificate of Inspection, confirming dimensional compliance at the stated accuracy grade. Grade AS-1 represents a high level of dimensional accuracy suitable for demanding inspection and calibration work. Licensed metrology technicians, tool and die machinists, and quality control professionals are the primary users of this type of precision standard.

This gage block is suited for use in both industrial and laboratory settings where precise dimensional reference is required. It is commonly used to verify or calibrate calipers, micrometers, height gages, and comparator setups. The 0.135-inch size fits into standard gage block sets as a supplemental or individual replacement block. Applications span general manufacturing, aerospace component inspection, toolroom work, and quality assurance programs where ASME-traceable standards are required.

Key Features

• Grade AS-1 accuracy per ASME standards for high-precision dimensional reference
• Steel construction for durability and long service life under regular handling
• 0.135-inch nominal size, precisely ground to five decimal places (0.13500 inches)
• Includes Certificate of Inspection for traceability documentation
• Rectangular form compatible with standard gage block accessories and holders

Compatibility

Designed as an individual precision reference block for use with standard gage block sets, holders, and accessories conforming to ASME gage block specifications.

Installation Notes

Gage blocks are handled by metrology technicians and quality control professionals, not installed in the traditional sense. Store blocks in a clean, dry environment and allow them to temperature-stabilize before use to ensure accurate readings. Clean contact surfaces with an appropriate solvent and lint-free cloth before wringing blocks together. Avoid dropping or sliding blocks across abrasive surfaces, as surface damage will compromise accuracy.