ITEM NAME:Portable Car LCD Digital Paint Thickness Gauge Meter Painting Measuring Description: Portable coating thickness gauge,which can meansure the thickness of non-metallic coating(such as paint,film,etc.) On netal substrate quickly,nondestructively,and accuratly.It is mainly used to measure the thickness of the vehicle's surface paint and other coating 1.Measurement preparation - Open battery cover and load two CR2032 button batteries(Not Includes); Pay attention to positive and negative pole. 2.Turn on/off - Leave the instrument hang in the air and press"CLR"button to turn it on,LCD full screen display,which means it enters the measurement state.Then long press"CLR"button to turn it off. (Note:Keep it away from the substrate when starting up.) 3.Measurement- Press the probe onto the coated metal substrate lightly,ensure that the instrument should be perpendicular to the surface of the object that being measured. (Note:When the probe was pressed on the substrate,the LCD will display"---",then you must wait unit the measurement value displayed the LCD,then remove it from the substrate.If removing before a value is displayed,it will display the last measured value.) 4.Unit selection - After start-up,short press"UNIT"button to select measurement unit mm or mil. 5.LCD backlight - After start-up,long press"UNIT"button to turn on/off the backlight. 6.Clear screen data - After start-up,press"CLR"button to clear the data displayed on LCD screen. 7.Power off automatically - The Car Paint Tester will power off automatically if two minutes no operation after start-up.And it will power off automatically as well after five minutes start-up,even when you are operating it. Specification: Size: 87mm x 38mm x 22mm Package Includes: 1x Car Thickness Gauge Meter Note: Transition: 1cm=10mm=0.39inch Please allow slightly 0-1cm difference due to manual measurement..(Note:Keep it away from the substrate when starting up.). LCD backlight - After start-up,long press"UNIT"button to turn on/off the backlight. Power off automatically - The Car Paint Tester will power off automatically if two minutes no operation after start-up.