AS 1042 – Direct-acting indicating electrical measuring instruments and their accessories
Gives definitions, permissible limits of error for instruments and accessories under various conditions of operation, constructional requirements, marking, symbols, and testing, for ammeters, voltmeters, wattmeters, varmeters, phasemeters, power factor meters, frequency meters, ohmmeters, and synchroscopes, including multi-range and multi-purpose instruments of these types.
