Mitutoyo 177-182 Setting Ring 0.65 in Id Satin Chrome

Product Description

The MITUTOYO 177-182 is a precision setting ring used to calibrate and zero bore gauges, dial bore gauges, and similar internal measuring instruments. With an inside diameter of 0.65 inches, an outside diameter of 1.77 inches, and a thickness of 0.39 inches, this ring provides a known reference dimension for setting gauges before measurement. The satin chrome finish resists corrosion and reduces glare during use. Accuracy is held to 0.000060 inches, making it suitable for close-tolerance inspection work in tool rooms, quality labs, and production environments. Machinists, metrologists, and quality technicians rely on setting rings to maintain consistent, traceable measurements across bore gauging operations.

This setting ring is used wherever precise internal diameter references are required. Typical applications include setting dial bore gauges, air gauges, and plug gauge comparators in manufacturing inspection, precision machining shops, and metrology labs. It is appropriate for both job-shop and production-line inspection where bore diameter verification is a routine step. The 0.65-inch ID makes it suited for gauging small bores in machined components, hydraulic fittings, valve bodies, and similar parts requiring tight dimensional control.

Key Features

• Inside diameter of 0.65 inches held to 0.000060-inch accuracy for reliable gauge setting
• Outside diameter of 1.77 inches and thickness of 0.39 inches for stable handling and fixture use
• Satin chrome finish resists corrosion and minimizes reflective glare during inspection
• Compact, single-piece construction with no moving parts for consistent long-term reference use
• Sold individually, suitable for single-gauge setup or addition to an existing ring set

Compatibility

Designed as a reference standard for use with bore gauges and internal measuring instruments that require a 0.65-inch ID setting reference. Verify gauge range and setting ring ID match before use.

Installation Notes

Setting rings are handled and stored by metrology technicians and quality inspection personnel, not typically installed in a system. Clean the ring and gauge contact surfaces before use to prevent contamination from affecting the reference reading. Store the ring in its protective case away from temperature extremes and direct contact with other metal tools to preserve surface finish and dimensional integrity. Do not use the ring as a go or no-go gauge; it is a calibration reference only.