Black Oxide-Coated Pin Gauge Library, Material Tool Steel, Finish Black Oxide, Diameter Increment 0.001 in, Diameter Range 0.0610 in to 0.7500 in, Gauge Type No-Go (Minus), Number of Gauges 690, Overall Length 2 in, Surface Finish Uncoated, Tolerance +/-0.00020 in, Tolerance Class ZZ, Hardness RC 60/65, Included Certification Certificate of Accuracy, Includes Handle No, Long Form Calibration Certificate No, Number of Drawers 4, Standards ISO 17025:2005, Dimension Type Inch