Mitutoyo 611161-541 Steel Gage Block 0.121 in Grade AS-1

Product Description

The MITUTOYO 611161-541 is a rectangular steel gage block ground and lapped to Grade AS-1 accuracy per ASME standards. Gage blocks serve as dimensional reference standards used to calibrate measuring instruments, set comparators, and verify part dimensions on the shop floor or in the metrology lab. This block measures 0.121 inches in overall length and is manufactured from steel to provide stable, long-lasting reference geometry. A Certificate of Inspection is included, confirming the block meets ASME Grade AS-1 tolerance requirements. Machinists, quality technicians, and metrologists rely on blocks like this to maintain measurement traceability throughout precision manufacturing operations.

This gage block is suited for dimensional calibration and inspection tasks in tool rooms, quality labs, and production environments. Grade AS-1 blocks are appropriate for high-accuracy measurement applications where tight tolerance verification is required. The 0.121-inch size makes it a useful individual block for building stacks or for direct reference use in setups requiring that specific dimension. It is sold individually and ships with documentation supporting measurement traceability.

Key Features

• Grade AS-1 accuracy per ASME standards for high-precision dimensional reference
• Steel construction provides durability and dimensional stability over time
• 0.121-inch overall length for precise stack building or direct reference use
• Includes Certificate of Inspection for measurement traceability documentation
• Rectangular form compatible with standard gage block accessory sets and holders

Compatibility

Designed as an OEM-style individual gage block for use in standard rectangular gage block sets and accessories conforming to ASME gage block specifications.

Installation Notes

Gage blocks are handled and used by quality technicians and metrologists in controlled environments. Before use, clean block faces with an appropriate solvent and lint-free cloth to remove oils and debris that can affect wringing and measurement accuracy. Store blocks in their case away from heat sources and corrosive environments to prevent thermal expansion error and surface corrosion. Do not drop or slide blocks across abrasive surfaces, as damage to the lapped faces will compromise accuracy.