M-254 (Millivol'tmilliampermetr) 1974
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Millivoltmilliammeter "M-254" since 1974 produced Omsk plant "Electrotochpribor". The millivolt milliammeter '' M-254 '' is intended for accurate measurement of current values "‹"‹in milliamperes and voltages in millivolts. The measurement limits are 15. These are 0.15 - 03 - .0.6 - 1.5 - 6 - 15 - 60 mA for current and 15 - 30 - 60 - 150 - 300 - 600 - 1500 - 3000 mV for voltage. Dimensions millivoltmilliampeermetr - 98h224h158 mm. Its weight is 1.8 kg. The millivolt-millimeter meter scale is 118 mm long.
Information from collection of Valery Khartchenko