Pin Gauge Set, Material Steel, Diameter Increment 0.02 mm, Diameter Range 14.00 to 16.48 mm, Gauge Type Go (Plus), Number of Gauges 125, Overall Length 2 in, Tolerance +/-0.0050 mm, Tolerance Class ZZ, Hardness RC 60/65, Included Certification Certificate of Accuracy, Long Form Calibration Certificate Yes, Standards ISO 17025, NIST, Dimension Type Metric