Ultrasonic Thickness Gauge Base Material Steel Measuring Range 0.03 to 15.7 in (0.65 to 400mm) Accuracy 0.002 in Resolution (in/mm) 0.001/0.01 Velocity Ranges 0.039 to 0.394 in/microns (1000 to 9999 m/s) Measurement Rate 4 Readings/Sec. Frequency (MHz) 5MHz Data Storage Yes Recording Capacity 500 Readings Cord Length 3 ft.