Shipping Policy : Battery and Liquid Not Included During the Shipping Application * Materials measured: only 11 types of materials, including steel, cast iron, aluminum, red copper, brass, zinc, quartz glass, polyethylene, PVC, gray cast iron, nodular cast iron. * Used for measuring thickness and corrosion of pressure vessels, chemical equipment, boilers, oil storage tanks, etc. in industries of petroleum, shipbuilding, power station, and machine manufacturing. Features * High resolution measurement * Probe automatic zero calibration for system error correction * Capture the value of the minimum thickness. * Status indicator of the coupling and low battery. * Auto sleep and auto power off function to conserve battery life. * Humanized shape design, compact and portable, Can be used in harsh environment. Technical Specifications * Display: 4.5 digits LCD with EL backlight. * Operating principle: ultrasonic * Measuring range (metric/imperial): 1.0-245mm,0.05-8inch (in Steel). * Resolution: 0.1mm; * Accuracy: ±(0.5%H+0.1)mm, depends on materials and conditions * Units: Metric/Imperial unit selectable. * Power supply: 4x1.5 AAA size (UM-4) battery （Battery Not Included in the Package） * Battery indicator: low battery indicator * Operating conditions:temperature of 0-40℃; humidity: less than 90%RH and the surrounding environment without strong vibration, strong magnetic field, non corrosive medium and serious dust. * Dimensions: Main Unit 140mm×60mm×22mm * Gloss Weight :1KG Ultrasonic Thickness Gauge Ultrasonic Thickness Gauge Ultrasonic Thickness Gauge Ultrasonic Thickness Gauge Ultrasonic Thickness Gauge Ultrasonic Thickness Gauge Display 128×64 dot matrix LCD 128*64 LCD with LED backlight 128×64 LCD with LED backlight. 128x64 dot matrix LCD 128×64 dot-matrix LCD screen with EL backlight LCD Display Measuring Range 1～260mm 1.0mm～230.0mm（steel） 1.2~230mm 0.75-500mm 0.8～100mm 1.2-200mm,0.06-8inch Units mm and inch Selectable mm and inch Selectable mm and inch Selectable mm and inch Selectable mm and inch Selectable mm and inch Selectable Resolution 0.01mm or 0.001inch 0.01mm 0.01mm(lower than 100.0mm); 0.1mm(more than 99.99mm) 0.1mm(> 100mm)/0.01mm(<100mm) 0.1 mm or 0.001 in 0.1mm Accuracy ±(0.5%H+0.05)mm ±（0.5%H+0.04mm);H is thickness value; ±(0.5% thickness+0.04)mm ±（0.5%H+0.01）mm ±0.1mm ±(0.5%n+0.1) Storage Function YES YES YES YES YES NO