Radius Gauge Set, Range 1/64 to 17/64 In. by 64ths, 9/32 to 1/2 In. by 32nds, Accuracy +/-0.002 in, Configuration 5 Convex & Concave Radii, Dimension Type Angle, Included Sizes 1/16 in, 1/2 in, 1/32 in, 1/4 in, 1/64 in, 1/8 in, 11/32 in, 11/64 in, 13/32 in, 13/64 in, 15/64 in, 17/64 in, 3/16 in, 3/32 in, 3/64 in, 3/8 in, 5/16 in, 5/32 in, 5/64 in, 7/16 in, 7/32 in, 7/64 in, 9/32 in, 9/64 in, Increments 1/64 in (1/64 in to 17/64 in), 1/32 in (9/32 in to 1/2 in), Minimum Measurement - Inch 1/64 in