instrument, usually of the permanent-magnet moving-coil type associated with a rectifying device, intended to measure alternating quantities, alaldiga seotud ja püsimagnet liikuvmähistega mõõtevahend, mis on ette nähtud vahelduvvoolu tekitatud suuruste mõõtmiseks, instrument which is the combination of a measuring instrument sensitive to direct current and a rectifying device alternating currents or voltages may be measured