This handheld microprocessor-controlled ultrasonic thickness gauge is Used in almost all kinds of industries as it can perform precise measurements on various types of raw materials, components, parts and assembled machinery. A must have device in monitoring all types of pipes and pressure vessels for loss of thickness due to corrosion or erosion, chemical equipment, boilers, oil storage tanks, and even in the industries of petroleum, shipbuilding, power station and machine manufacturing. It can measure any hard materials, including steel, cast iron, aluminum, red copper, brass, zinc, quartz glass, polyethylene, PVC, gray cast iron, nodular cast iron, acrylic, water glass and other materials. Features: Standard: CE Approved by European Directives for health and safety Measure ultra thin materials from 1 mm thickness Used the exclusive Microcomputer LSI circuitÂand crystal time base to offer high accuracy measurement Capable of metering the thickness of a metal pipe High power emission and broad 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. Measure thickness of many materials such as Steel, Cast Iron, Aluminum, Red copper, Brass, Zinc, Quartz glass, Polyethylene, PVC, Gray cast iron, Nodular cast iron Widely used in almost all types of industries to measure rough surfaces and even cast iron Automatic power off to conserve power Specification: Operating Principle:  ULTRASONIC LCD display : 4 digits, 10 mm LCD Measuring method: Ultrasonic pulse echo Measuring range (metric/imperial) :Â1.0~200.00mm, 0.039~7.87inch (45# steel) Resolution: 0.1mm / 0.001 inch Accuracy: ±(0.5%n+0.1) Sound velocity: 500 ~ 9000m/s Metric / Imperial conversion (mm &inches) Power supply : 4 x 1.5V AAA (UM-4)batteries (not included) Operation Temperature : 0 ~ 50°C(32 ~ 122°F) Diameter of sensor : 8 mm (0.31' inch) Length of sensor : 90 cm (35' inch) Weight of sensor : approx. 40g Unit size : 120 x 62 x 30 mm (4.7'x 2.4' x 1.2' inch) Unit weight : approx. 164g (not including batteries Set Includes: 1 x Ultrasonic Thickness Gauge (main unit)  1 x bottle of Glycerin FREE 1 x Ultrasonic sensor 1 x English Instruction Manual 1 x Protective Carrying Case with contoured rubber compartments  Optional Item (not included in set)  Please click here to buy this optional item  CD (software) and cable in extra or you may contact us at sales(at)gainexpress.com if you want an optional items to be included in your order