... HL, HRC, HRB, HV, HB, HS RS232 Interface SV-T201 Ultrasonic Thickness Gauge Handy, precise, excellent EMC performanceInstrument features:Standard parameter ... and auto correcting system errors.Able to measure the ultrasonic velocity in turn if the thickness value is known ... thickness, alarm when the value is beyond the limit.With LED backlight of display, easily used in dark environment.Indicating ...