Description:This ultrasonic thickness gauge is widely used in various precise measurement for different hardware / parts in industrial realm.Automatic linear compensation: this advanced software program enhances the precision by correcting the non-linear accuracy of transducer.LCD Backlight Display: Large LCD display screen show the testing results, easy to read. LCD backlight display for operation under dark environment.Automatic calibration to assure high accuracy with 1.2~225mm range. Widely applied in manufacturing fields, metal processing, and commercial inspection.This professional ultrasonic thickness gauge is an intelligent handheld thickness tester, which adopts ultrasonic measuring principle, and is controlled by micro processor, provides quick and precise measurement of thickness for most of industrial material.Specifications:Model: AS840.Color: show as pictures.Size: 150*80.5*34mm.Material: plastic.Measuring Range: 1.2~225mm (Steel).Minimum Limit for Tube Measuring: 20*3mm (Steel).Accuracy: ±(1%H+0.1)mm.Resolution: 0.1mm.Sound Velocity Range: 1000~9999m/s.Working Frequency: 5MHz.Power supply: 9V battery (not include).Package Include:1 * AS840 Thickness Meter.1 * User Manual.1 * Probe