... RS232/USB port 3.Li battery power High-Tech Digital Ultrasonic Flaw Detector Introduction: The digital ultrasonic flaw detector is the portable industrial ... widely used in any fields that need defect inspection and quality controlling e.g. manufacturing industry, iron & steel metallurgical industry, ... 900,1000,2000,3000,4000,5000,6000,7000,8000,10000Adjusting step: 0.1mm(2.5 mm~99.9mm),1mm(100mm~ ...