G.A.L. Gage Company - MOBILE FRIENDLY :: Radius Gauges
Radius Gages Explained - Practical Machinist
Electronic Digital Display Radius Gauge | Radius Indicator | R Measurement - Electronic - Aliexpress
4 pieces stainless steel radius fillet gauge measuring tool, 2 types of radius gauges can be used to check convex and concave surfaces, measuring range R0.3-1.5/ R1-6.5/ R7-14.5/ R15-25