... , HRB, HV, HB, HS RS232 Interface SV-T201 Ultrasonic Thickness Gauge Handy, precise, excellent EMC performanceInstrument features:Standard ... report printing via serial port Reliable measurement results with rapid lock-in readingsPowered by two 1.5V ... with various frequency and crystal size.Automatic zero adjustment, two-point correction and auto correcting system errors.Able to measure the ultrasonic ...