Mitutoyo 611223-531 Steel Gage Block 12 in Grade 0

Product Description

The MITUTOYO 611223-531 is a rectangular steel gage block measuring 12.00000 inches in length and manufactured to Grade 0 accuracy. Gage blocks of this type serve as primary length reference standards used to calibrate measuring instruments, verify machine setups, and establish precise dimensional benchmarks in metrology labs and production environments. Grade 0 blocks meet ASME standards and are intended for applications requiring tight tolerance verification. The block ships with a Certificate of Inspection, confirming traceability to recognized dimensional standards. Weight is approximately 1 pound.

This gage block is suited for calibration laboratories, tool rooms, and precision manufacturing facilities where dimensional reference accuracy is critical. Metrologists, quality technicians, and toolroom machinists use Grade 0 blocks for instrument calibration and inspection setups. The 12-inch nominal length makes this block appropriate for longer-range setups such as height gauge calibration, linear standard verification, and machine tool alignment checks.

Key Features

• Grade 0 accuracy per ASME standards for high-precision metrology work
• 12.00000-inch nominal length for long-range dimensional reference
• Steel construction for durability and dimensional stability
• Includes Certificate of Inspection for traceability documentation
• Rectangular form compatible with standard gage block accessories and holders

Compatibility

Designed as an OEM-style rectangular gage block for use with standard gage block sets, holders, and accessories conforming to ASME B89.1.9 rectangular block geometry.

Installation Notes

Gage blocks are handled and stored by metrology technicians and toolroom personnel. Before use, blocks should be cleaned with an appropriate solvent to remove storage oil and allowed to thermally stabilize at the reference temperature of 68 degrees F (20 degrees C) per ASME standards. Avoid contact with abrasive surfaces and do not stack or wring blocks without proper technique, as surface damage will affect accuracy. Store in the supplied case to protect lapped faces from contamination and corrosion.