Ultrasonic Thickness Gauge with ISO Certificate – Digital, Ultrasound, 0.03″ – 15.7″ (0.65 mm – 400 mm), 1000 to 9999 m/s (0.039 to 0.394 in/µs), 4 per second for a single point measurement, 5 files, up to 100 values for each file (total of 500 logs)