Direct acting indicating analogue electrical measuring instruments and their accessories. Definitions and general requirements common to all parts|Symbols, Ammeters, Conformity, Testing conditions, Temperature, Accuracy, Instrument shunts, Power measurement (electric), Signal devices, Frequency measurement, Vibration testing, Damping, Analogue signals, Accessories, Response time, Impedance measurement, Electrical testing, Wattmeters, Resistors, Ohmmeters, Impact testing, Classification systems, Electrical measurement, Heating tests, Phase measurement (electric), Magnetic fields, Marking, Instrument scales, Indicating device components, Errors, Tolerances (measurement), Voltmeters, Working range, Varmeters, Electrical measuring instruments