Starrett Radius Gage Set Includes 167AH and S167B with 110 Holder for Both Convex and Concave Radii - Stainless Steel, 25 Gauges, 1/64-17/64"; 9/32-1/2" Radius Gage - S167CHZ: Radius Gages: Amazon.com: Industrial & Scientific
with 8 Pc Radius Gauge Set 1-1/16'' to 1-1/2'' Gauges without Holder: Amazon.com: Industrial & Scientific