Starrett 50637 Radius Gage 17/64 Inch Convex Concave

Product Description

The STARRETT 50637 is a single-leaf radius gage designed to check both convex and concave radii on machined parts, castings, and formed components. Manufactured from stainless steel with a satin chrome finish, the leaf measures a 17/64-inch (approximately 0.27 inches maximum) radius. Machinists, tool-and-die makers, and quality-control technicians use this gage to verify radius conformance quickly and without specialized equipment. The satin chrome finish reduces glare during inspection and resists corrosion in shop environments. At 0.05 pounds, the leaf is lightweight and easy to handle during close-tolerance work.

This gage is suited for inspection of internal and external radii on metal and plastic workpieces in precision machining, fabrication, and quality-assurance settings. The convex and concave measurement capability on a single leaf makes it practical for comparing workpiece radii against a known standard. It is typically used in job shops, tool rooms, and manufacturing facilities where consistent radius verification is required across production runs or incoming material inspection.

Key Features

• Measures both convex and concave radii from a single leaf
• 17/64-inch radius with a maximum radius of 0.27 inches
• Stainless steel construction for durability and corrosion resistance
• Satin chrome finish reduces glare during visual inspection
• Lightweight at 0.05 pounds for comfortable single-hand use
• Individual leaf design allows direct comparison against workpiece profiles

Compatibility

Designed as a standard replacement or supplemental leaf for use in radius gage sets requiring 17/64-inch convex and concave radius inspection capability.

Installation Notes

No installation is required for this inspection gage. Store the leaf in a dry environment away from abrasive materials to maintain the accuracy of the ground radius profile. When using the gage, ensure the workpiece surface is clean and free of burrs or chips that could affect contact. Handle with care to avoid dropping, which may damage the precision-ground leaf edge.