Range : 0 to 20 mm Display : 3-1/2 digit LED Resolution : 0.1 mm Excitation : 2 Volts RMS 5 KHz, Sinewave Power supply : 230V +/-10%, 50 Hz. Calibration Bench with 20mm micrometer. Test point also provided. Complete with operation manual. Experiments: To study waveform at different points. To plot Displacement vs. Digital Voltmeter reading.