Starrett 50643 Radius Gage 7/16 Inch Stainless Steel

Product Description

The STARRETT 50643 is a single-leaf radius gage designed to measure both convex and concave radii at 7/16 inch (0.4375 inches). Finished in satin chrome over stainless steel, it resists corrosion and maintains dimensional accuracy in shop environments. Each leaf provides a direct go/no-go reference profile, allowing machinists, pipefitters, and fabricators to quickly verify fillet radii, corner radii, and curved surfaces without additional tooling. The satin chrome finish reduces glare under shop lighting, making profile matching faster and more reliable during production or inspection work.

This radius gage is suited for use in metalworking shops, fabrication facilities, and maintenance environments where consistent radius verification is required. Typical applications include checking machined fillets, weld prep profiles, and formed sheet metal edges. Pipefitters and millwrights also use radius gages when fitting components that require matched curved contact surfaces. The single-leaf format makes it easy to store in a tool roll or gauge set alongside complementary leaf sizes.

Key Features

• Measures both convex and concave radii at 7/16 inch per leaf
• Maximum radius of 0.44 inches provides a direct profile reference
• Stainless steel construction resists corrosion in wet or oily shop conditions
• Satin chrome finish reduces glare and improves visibility during profile matching
• Compact single-leaf design at 0.05 pounds for easy handling and storage

Compatibility

Designed as a standard single-leaf radius gage suitable for general metalworking, fabrication, and inspection tasks requiring a 7/16 inch radius reference.

Installation Notes

Radius gages require no installation. Handle with clean, dry hands or cotton gloves to prevent oils from affecting the finish or reading accuracy. Store away from abrasive materials to protect the profile edges. Periodic cleaning with a light machine oil or stainless steel cleaner will maintain the finish and prevent surface corrosion.