... and lifetime maintence AMD-DOBAMONI DC-411BS Coating Thickness Tester 1,FEATURES * It meets the standards of ... the optional cable. * Statistics is available. * Battery indicator:Low battery indicator2,OPERATING PRINCIPLE Operating principleApplicationFor example(F Type) Magnetic ... thickness gauge,ultrasonic thickness gauge,surface roughness tester,hardness tester,vibration meter,gloss meter etc.5. CE