THROUGH PAINT OR COATING ULTRASONIC THICKNESS GAUGE KT-3D SERIES FEATURES: AUTOMATIC SELF CALIBRATION COUPLANT INDICATOR AUTOMATIC POWER OFF DEVICE HIGH-LOW LIMIT ALARM LCD BRIGHTNESS ADJUST THROUGH COATING CAPABILTY LOW BATTERY INDICTOR Specifications: MEASURING RANGE STANDARD Mode: 0.8mm– 250mm Depending of the probes THROUGH COATING Mode: 3mm– 18mm Depnding of the probes DISPLAY RESOLUTION KT-300D 0.1mm or 0.01inch KT-310D 0.1mm/ 0.01mm or 0.01inch/ 0.001inch TOLERANCE KT-300D + / - 0.1mm in steel KT-310D + / - 0.025mm in steel VELOCITY RANGE 1000-9999 m/ s ( 0.0393-0.3936 inch/ ¼ s) DISPLAY TYPE 4 digital LCD with advanced backlight MEMORY 500 Test Values POWER 2 pcs. 1.5v AA Batteries OUTSIDE DIMENSION 149mm× 73mm× 32mm WEIGHT 160g STANDARD DELIVERY : MAIN UNIT WITH THROUGH COATING MODE STANDARD PROBE PT-08 COUPLANT BOTTLE TWO AA SIZE 1.5V BATTERIES OPERATION MANUAL CARRYING CASE