Starrett 50645 Radius Gage 0.5 Inch Stainless Steel

Product Description

The STARRETT 50645 is a single-leaf radius gage designed to check and verify both convex and concave radii on machined parts, castings, and fabricated components. Each leaf measures a 0.5-inch radius and features a satin chrome finish over stainless steel construction. The finish reduces glare under shop lighting, making it easier to read fit against a workpiece. Machinists, toolmakers, and fabricators use radius gages during inspection and layout work to confirm fillet and edge profiles match drawing specifications. At 0.05 pounds, this gage is a lightweight bench and portable inspection tool suited for production and job-shop environments.

This gage is used wherever precise radius verification is required on metal or other rigid materials. Typical applications include checking fillet welds, turned shoulders, mold cavities, and die radii. The convex and concave measurement capability on a single leaf allows the same tool to check both inside and outside radius profiles without swapping instruments. It is a standard inspection tool in machine shops, fabrication shops, and quality control stations handling dimensional inspection of parts to print.

Key Features

• Measures both convex and concave 0.5-inch radii from a single leaf
• Stainless steel construction for corrosion resistance in shop environments
• Satin chrome finish minimizes glare during inspection
• Lightweight at 0.05 pounds for easy bench or portable use
• Single-piece leaf design for straightforward fitment checks against a workpiece

Compatibility

Designed as a standalone single-leaf radius gage for general-purpose inspection of 0.5-inch convex and concave radii on machined, cast, or fabricated parts.

Installation Notes

No installation is required for this inspection tool. Clean the workpiece contact surface before gaging to avoid false readings from chips or debris. Handle the leaf edges with care to prevent nicking, which would affect measurement accuracy. Store in a protective case or tool roll to maintain the finish and edge condition.