Spi 14-175-4 Radius Gage Set 32 Piece Stainless Steel

Product Description

The SPI 14-175-4 is a 32-piece radius gage set designed to measure both concave and convex radii on machined parts, castings, and formed components. Built from stainless steel, the set covers a radius range of 17/64 inches to 1/2 inches with a graduation of 1/64 inches and an accuracy of 0.005 inches. Each blade is mounted on a common pivot point secured by a knurled locking nut, allowing the technician to fan out individual gages and lock them in place for inspection use. This set is used by machinists, tool and die makers, and quality control inspectors working in production and maintenance environments.

The 14-175-4 is suited for dimensional inspection tasks where radius conformance must be verified against a drawing callout or a finished profile. The set includes 16 concave and 16 convex gage blades, covering the same radius increments in both forms. Typical applications include checking fillet radii on turned or milled parts, verifying die radii, and inspecting formed sheet metal edges. The stainless steel construction resists corrosion in shop environments where coolant or moisture is present.

Key Features

• 32 blades total: 16 concave and 16 convex, covering matched radius increments from 17/64 inches to 1/2 inches
• 1/64 inches graduation for precise incremental radius selection
• Accuracy of 0.005 inches per blade
• Stainless steel construction for corrosion resistance in machining environments
• Knurled locking nut holds selected blade in position during use
• Style B configuration with all blades on a single pivot holder

Compatibility

Designed as a general-purpose radius gage set for use in machining, fabrication, and quality inspection applications where radii between 17/64 inches and 1/2 inches must be verified.

Installation Notes

No installation is required for this hand tool. Store the set in a dry location away from abrasive materials to protect blade edges and maintain accuracy. Clean blades before and after use to prevent measurement error caused by debris or coolant residue. Calibration against a traceable standard is recommended when the set is used for formal quality control inspection.