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The millivolt milliammeter '' M-82 '' since 1965 produced the Leningrad plant "Vibrator". '' M82 '' is a portable laboratory multi-limiting device of a magnetoelectric system with direct reading. Designed to measure current and voltage in DC circuits. Main technical characteristics: Millivolt "“ milliammeters were manufactured with 12 measurement ranges: from 6 to current and 6 to voltage: 0"“ 0.15"“0.6 "“1.5"“6.0 - 15"“60 ma and 0 - 15"“30 - 150 - 600 "“1500 - 3000 mV. The accuracy class of the device is 0.5. The change in instrument readings when the temperature changes from normal (200 ° C) to no more than 1%, from the upper limit of the scale for every 100 units. The change in instrument readings from the influence of an external magnetic field is not more than 0.5%. Current consumption per millivolt limits 0.15 ma. Insulation test voltage of 2 kV. Overall dimensions 310Ñ…200Ñ…120 mm. The weight of the device is 4.5 kg, with a case of 6.0 kg. Constructive performance: The devices are made in a plastic dust-proof housing. The scale of the device is two-row, with mirror counting and divided into 100 and 150 divisions, 140 mm long.