1100% and high quality 2This is a type of smart ultrasonic thickness meter and can measure thickness 3It can measure sound speed of many type of materials, such as metal,plastic,ceramic,glass and other good conductors of ultrasonic wave. 4This ultrasonic thickness meter features high accuracy and high stability 5The measuring range is 2-300mm, and sample to operate Features:100% and high quality This is a type of smart ultrasonic thickness meter and can measure thicknessIt can measure sound speed of many type of materials, such as metal,plastic,ceramic,glass and other good conductors of ultrasonic wave.This ultrasonic thickness meter features high accuracy and high stabilityThe measuring range is 2-300mm, and sample to operateSpecifications:Probe operating frequency: 2MHz Range: 2-300mm (steel) Resolution: 0.1mm Measurement accuracy: (l% H + 0.1) mm, H is the thickness of the object Pipe measurement lower limit: Dia. 20x3mm Sound speed adjustment range: 1000 ~ 9999m/s Known thickness of the measured speed of sound: measuring range of 1000 ~ 9999m/s The measured thickness 20mm, the speed of sound measurement accuracy of 5% Power: 3 * 1.5V, AA alkaline batteries (not included) Relative humidity: