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 * Wide Measuring Range and high resolution. With high power emission and broad band receiving sensitivity, the gauge can match probes of different frequencies. That makes it easy to measure the rough surface, even cast iron. It is widely used in almost all kinds of industries. * Applicable to measure the thickness of many materials, e. g. Steel, Cast iron, Aluminum, Red copper, Brass, Zinc, Quartz glass, Polyethylene, PVC, Gray cast iron, Nodular cast iron. * Used the exclusive Micro-computer LSI circuit and crystal time base to offer high accuracy measurement & fast measuring time. * Automatic power off to conserve power. Technical Specifications * Display: LCD * Sensor: Ultrasonic Probe * Measuring Range: 1.5~200mm/0.06~8 inch * Resolution: 0.1mm * Accuracy: ±(0.5%n+0.2) * Sound Velocity: 1000~9,000 m/s * Lower Limit of Pipes: Φ15x2.0mmΦ20x3.0 Determined By Transducer * Operating Conditions: Temperature 0~40ºC, Humidity <85%RH * Power Supply: 4x1.5V AA(UM-3)Battery (not included in package) * Dimensions: 160x68x32mm * Weight: 208g(Not Including Batteries) *Standard Accessories: main unit, standard probe, carrying case, operation manual,Include RS-232C Data Cable with Software.