YWBL-WH Radius Fillet Gauge Stainless Steel, Concave Convex Measuring Tool for Tool & Die Makers, Machinists, and Many Other Worker to Check The Radius(R25-50MM), Measuring Tool: Amazon.com: Industrial & Scientific
6 Pcs Stainless Steel Radius Gauge with Feeler Gauge Set Arc Radius Fillet Gauge and 0.04-0.88mm Space Measure Tool - Walmart.com
6 Pcs Stainless Steel Radius Gauge With Feeler Gauge Set Arc Radius Fillet Gauge And 0.04-0.88mm Spa | Fruugo NO
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
Amazon.com: uxcell Radius Gauge Set R15-25mm 16 Pairs of Leaves Radius Gauge Fillet Gauge, Silver Tone : Industrial & Scientific