Sh1213 (Vol'tmetr cifrovoj) 1981
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Digital voltmeter "Щ1312" was produced presumably since 1981. The voltmeter is designed to measure DC voltage and has an output to an external digital printing device containing the signals of the beginning of printing, polarity and the measurement subrange in a single positional code and the signal of the measurement result in code 8-4-2-1. Specifications: measuring range from 0 to 500 V; sub-ranges of measurements of 1.6 V; 16 V; 160 V; 500 V input impedance 1 ± 0.01 MΩ. Subband switching is manual. The choice of polarity is automatic. The overall dimensions of the voltmeter are 200x125x253 mm. Weight 4.5 kg. ,null,ru,null,null,null,null
Information from collection of Valery Khartchenko