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Capable of performing measurements on a wide range of material. Four transducer models. Probe-Zero function, Sound-Velocity-Calibration function. Two-Point Calibration function. Two work modes: Single point mode and Scan mode. Coupling status indicator showing the coupling status. Auto sleep and auto power off function to conserve battery life. Optional software to process the memory data on the PC. Optional thermal mini-printer to print the measured data via RS232 port. Specifications: Display128×64 dot matrix LCD with EL backlight. Measuring Range0.75300mm (in Steel). Sound Velocity Range: 1000 9999 m/s. Resolution0.1/0.01mmselectable. Accuracy ±0.5%Thickness+0.04mm Units: Metric/English unit selectable. Four measurements readings per second for single point measurement, and ten per second for Scan Mode. Memory for 20 files (up to 99 values for each file) of stored values. Upper and lower limit can be pre-set. It will alarm automatically when the result value exceeding the limit. Power SupplyTwo AA size, 1.5 volt alkaline batteries. 100 hours typical operating time (EL backlight off). CommunicationRS232 serial port. CaseExtruded aluminum body suitable for use under poor working conditions. Outline dimensions132H X 76.2W mm. Weight345g