Spi 30-685-2 Radius Gage Set 8 Piece Stainless Steel

Product Description

The SPI 30-685-2 is an 8-piece radius gage set designed to measure concave and convex radii on machined parts, castings, and fabricated components. Each blade is manufactured from stainless steel with a satin chrome finish for corrosion resistance and long service life. The set covers a range of 9/16 inch to 1 inch across eight individual radius blades and achieves an accuracy of 0.0012 inch. A vinyl storage case is included to protect the blades and keep the set organized on the bench or in a tool cart. This set is a standard inspection and layout tool used by machinists, tool and die makers, and quality control technicians.

The 30-685-2 is suited for use in machine shops, manufacturing facilities, and fabrication environments where radius verification is required during production or incoming inspection. The eight blades cover the following radii: 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, and 1 inch. The set is appropriate for both shop-floor use and inspection benches where quick radius checks are needed on round grooves, fillets, and profiles.

Key Features

• Stainless steel blades with satin chrome finish resist corrosion and wear
• Accuracy of 0.0012 inch across all eight blades
• Covers eight radii from 9/16 inch to 1 inch in standard fractional increments
• Vinyl storage case included for organized storage and transport
• 8-piece set addresses the most common fractional radius sizes in this range

Compatibility

Designed as a general-purpose radius gage set for use with machined, cast, and fabricated metal or plastic workpieces requiring radius verification in the 9/16 inch to 1 inch range.

Installation Notes

No installation is required for this hand tool. Select the appropriate blade and lay it against the workpiece radius to check fit under adequate lighting. Keep blades clean and lightly oiled when stored to prevent surface oxidation. Return all blades to the vinyl case after use to avoid damage to the precision-ground edges.