Spi 10-719-3 Setting Ring 0.5 in Id 1.5 in Od

Product Description

The SPI 10-719-3 is a precision setting ring used to calibrate and verify bore gauges, plug gauges, and other internal measuring instruments. With a 0.5-inch inside diameter, 1.5-inch outside diameter, and a thickness of 0.393 inches, this ring provides a known master reference dimension for gauge setup and zeroing. Manufactured to an accuracy of 0.0001 inches, it delivers the tight tolerance required for quality control work in machine shops, production floors, and inspection labs. The silver finish indicates a hardened, ground, and lapped working surface with 10 micrometers surface smoothness.

Setting rings are used wherever a technician or inspector needs to establish a precise internal reference point before taking bore measurements. This ring is suited for use in metrology departments, production quality checks, and toolroom applications where repeatable, traceable measurement setup is required. It is typically handled by quality control technicians, machinists, and precision measurement professionals working to tight dimensional tolerances.

Key Features

• 0.5-inch inside diameter provides precise internal reference for gauge calibration
• Accuracy of 0.0001 inches supports high-precision measurement applications
• 10-micrometer surface smoothness ensures consistent gauge contact
• 0.393-inch thickness offers stable seating on a flat surface or gauge stand
• Hardened and ground construction resists wear over repeated use

Compatibility

Designed as a master reference ring for calibrating and zeroing bore gauges and similar internal measuring instruments that accept a 0.5-inch nominal inside diameter reference.

Installation Notes

Setting rings are handled by quality control technicians and machinists and require no permanent installation. Keep the ring surface clean and free of burrs or debris before use, as contamination will affect gauge accuracy. Store in a protective case away from moisture and temperature extremes to maintain dimensional stability. Do not drop or stack with other hard tooling, as impact damage can compromise the lapped surface.