These stainless steel Philadelphia Luthier radius gauges can quickly find the curvature of a fingerboard or bridge. Use them frequently to check your work as you smooth or shape a fingerboard or frets: a quick visual check keeps you from accidentally altering the shape - a mistake that's easy to make and hard to fix. Set of 2. (One gives you 7.25", 9.5", 10", 12"; the other 14", 15", 16" and 20").

7.25”, 9.5”, 10”, 12”, 14”, 15”, 16”, and 20” radii
Laser cut from stainless steel
Etched with radius
.026" (.67mm) thick
Approx. 3.25" (82.3mm) square