Ultrasonic Thickness Gage Ferrous and Non Ferrous Base Material Measuring Range 0.040 to 5.0 In (1 to 125mm) Accuracy +/-0.00 In and +/-0.01mm Velocity Ranges 0.0492 to 0.393 In/uSec 1250 to 10 000 M/Sec Measurement Rate 6 Readings/Sec Frequency 5 MHz Data Storage Interface USB + IR Printing Recording Capacity 250 Readings Cord Length 3 Ft Standards ASTM E797 NIST Calibration Certificate Includes 3 AAA Batteries Protective Holster Couplant Nylon Carrying Case and instructions