• Minimum Measurement (Decimal Inch): 0.125
• Maximum Measurement (Decimal Inch): 0.5
• Set of 4 gauges • Hardened-ball measuring surface with two-point contact • Radius on each gauge is less than the minimum diameter to be measured, which provides the two-point contact necessary for maximum accuracy • Smooth, sensitive adjustment for better feel, giving more accurate measurements • The adjustment of the gauges beyond their range is restricted by a safety stop that prevents breakage