... HRB, HV, HB, HS RS232 Interface SV-T201 Ultrasonic Thickness Gauge Handy, precise, excellent EMC performanceInstrument features:Standard ... the power key is also available. Display contents: thickness value, coupling state, power state, CAL calibration ... errors.Able to measure the ultrasonic velocity in turn if the thickness value is known in order ... on SV-T201 High-precision ultrasonic thickness gauge