Starrett 50633 Radius Gage 13/64 Inch Convex Concave

Product Description

The STARRETT 50633 is a precision radius gage leaf designed to measure both convex and concave radii at 13/64 inch (0.203 inches maximum radius). Manufactured from stainless steel with a satin chrome finish, this single-leaf gage is built for repeated use in shop and field environments. Machinists, tool and die technicians, and quality control inspectors use this gage to verify fillet and corner radii on machined parts, castings, and weldments. The satin chrome finish reduces glare under shop lighting, making profile comparisons easier to read at the workpiece.

This gage is suited for inspection and layout work in precision machining, fabrication, and manufacturing quality assurance. It is used wherever a 13/64 inch radius must be verified or scribed on a workpiece. The dual convex and concave profile on a single leaf allows the technician to check both inside and outside radii without switching tools. Typical applications include checking turned shoulders, milled fillets, and stamped form radii in both prototype and production settings.

Key Features

• Measures convex and concave radii from a single leaf — 13/64 inch radius profile
• Stainless steel construction resists corrosion and wear in shop environments
• Satin chrome finish reduces reflective glare for easier visual comparison
• Compact, lightweight design at 0.05 pounds for easy handling and storage
• Maximum radius of 0.2 inches for precise small-radius inspection

Compatibility

Designed as a direct-use radius gage leaf for inspection and layout of 13/64 inch convex and concave radii on machined, cast, or fabricated workpieces. Intended for use as a standalone leaf or as part of a radius gage set where individual leaves are used by size.

Installation Notes

No installation is required for this hand-held inspection gage. Clean the workpiece contact surface before use to ensure accurate profile comparison. Store the leaf flat or in a protective case to prevent burring of the profiled edges. Calibration should be verified against a known standard as part of a regular quality assurance program.