"Features A-scan waveform can be displayed for echo analysis and measurement of complex workpiece Compatible with many types of transducers, both single and dual element transducers Users can set blanks to shield aftershocks or clutter Echo-echo measures the true metal thickness while ignoring the thickness of coating layer. Thru-coat technology measures metal and non-metallic coating thickness. Signal auto-amplification function Adjustable voltage variable pulse width square wave pulse generator Single value B-scan display function Fast measurement mode up to 20 times per second Set upper and lower limits and alarm Data can be output to a removable MicroSD memory card. Can store up to 500,000 measured values and waveforms. Technical Specification : Measurement range : 0.20 - 500mm Velocity range : 508 m/s - 18.699 m/s Display screen Color TFT LCD : 320 x 240 pixels Pulse generator : Adjustable Square Wave Pulse Generator Resolution : 0.001mm or 0.01 or 0.1mm (optional) Emission voltage : 60V, 110V, 150V, 200V optional Emission pulse width : varies with transducer frequency Gain range : 0 - 99dB, 1dB step Frequency range : 0.5 Mhz - 20Mhz Measurement rate standard : (4Hz), fast (20Hz) Transducer settings : 10 sets of fixed transducer setting and 22 sets of custom transducer setting Data Storage : 500 data files, each capable of storing 1000 measurements and waveforms Working temperature : 0 C - 40 C Power : three AA battery or niMH batteries Dimensions (mm) : 187mm x 87 mm x 43 mm Weight (g) : 360 gr "