coating thickness gauge, large measuring range and accurate quickly measurement, SV-UM2 coating thickness gaugeStandard package:Standard probe (PT-08)Carrying caseTwo 1.5V AA alkaline batteriesCouplantOperating manualCertification of qualityPackaging listOperating principle:Ultrasonic pulse/echo method with dual-element probesProbe zero adjustment:Selectable: 1-point calibration: normal ...