Selecting a Radius Gage on Amazon.com
A radius gauge, or radius gage, is a measuring tool for checking the radius of a groove, corner, or other rounded surface of a machined part. In its most basic form, a radius gauge is a metal blade or insert with one or more of its edges machined to a specific inch or metric radius. There are also more complex tools that can measure a range of radii. Radius gauges are available singly or in a radius gage set containing various sizes. A pocket-knife style radius gauge consists of a metal bar with different sized inserts that fan out from each end. Also known as a fillet gauge, a radius gauge is commonly used in machining and manufacturing operations.