DS DS/EN 60051-1
DS DSEN 60051-1 1999-SEP-13 Drect actng ndcatng analogue electrcal measurng nstruments and ther accessores - Part 1 Defntons and general requrements common to all parts
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Applies to direct indicating electrical measuring instruments having analogue display, such as: ammeters, voltmeters, wattmeters, varmeters, phasemeters, frequency meters, synchroscopes and ohmmeters. Also applies to certain accessories used with such apparatus, e.g. shunts, series resistors and impedance elements.