Mitutoyo 611173-531 Steel Gage Block 0.133 in Grade 0

Product Description

The MITUTOYO 611173-531 is a rectangular steel gage block sized at 0.133 inches, manufactured to Grade 0 accuracy. Gage blocks are precision-ground reference standards used to calibrate measuring instruments, set comparators, and verify dimensional tolerances in machining and inspection environments. This block meets ASME standards and includes a Certificate of Inspection, confirming that it has been measured and documented to Grade 0 tolerances. Machinists, quality control technicians, and metrologists rely on blocks at this accuracy grade for demanding inspection work where tight dimensional control is required.

This gage block is suited for use in tool rooms, metrology labs, and production inspection stations. It is appropriate for calibrating micrometers, dial indicators, height gages, and similar precision measuring instruments. At 0.133 inches, it fills a specific reference size need within a gage block set or serves as a standalone reference standard. Grade 0 classification places it in a high-accuracy tier appropriate for inspection and standards-lab use rather than general shop-floor wear applications.

Key Features

• Grade 0 accuracy per ASME standards for high-precision dimensional reference
• Rectangular steel construction for durability and dimensional stability
• Nominal size of 0.133 inches for a specific calibration reference point
• Includes Certificate of Inspection documenting conformance to stated tolerances
• Single-piece packaging suitable for individual replacement or collection build-out

Compatibility

Designed as an OEM-grade reference standard compatible with standard rectangular gage block sets and wringing accessories used in precision metrology and dimensional inspection applications.

Installation Notes

Gage blocks should be handled by metrology or quality control personnel trained in proper wringing technique and block care. Store blocks in their protective case when not in use and keep them away from humidity, temperature extremes, and abrasive contaminants that can affect surface flatness. Clean blocks with an appropriate solvent and lint-free cloth before and after use. Do not drop or stack blocks carelessly, as surface damage will compromise accuracy.