Direct acting indicating analogue electrical measuring instruments and their accessories - Definitions and general requirements common to all parts has-digital in TIP64001

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Direct acting indicating analogue electrical measuring instruments and their accessories - Definitions and general requirements common to all parts has-digital in TIP640011 Scope This part of IEC 60051 specifies definitions and general requirements for direct acting indicating analogue electrical measuring instruments and their accessories. This part applies to direct acting indicating analogue electrical measuring instruments, such as: ammeters and voltmeters; wattmeters and varmeters; frequency meters of pointer and vibrating reed types; phasemeters, power factor meters and synchroscopes; ohmmeters(impedance meters)