Master-5 (Vol'tmetr-probnik) 1993
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The Master-5 voltmeter probe has been produced since 1993 in Belarus. Digital measuring device with functions necessary for troubleshooting electronic equipment. The device provides automatic selection of measuring ranges for ac and dc voltage, resistance and sound signaling for continuity. There is a 3.5-bit LCD indicator and a built-in indicator of the polarity of the measured voltage.
Information from collection of Valery Khartchenko