MSR (Magazin soprotivlenij) 1936
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The resistance shop "MSR" was produced in a small series since 1936 by the Leningrad Electromechanical Plant named after Kulakov. The resistance box is designed for laboratory selection of the required resistance in the range from 40 Ohm to 4.4 kΩ and power up to 1 W.
Information from collection of Valery Khartchenko