Moving coil – measure DC current and voltage in control panels and industrial applications
Moving coil instruments with built in rectifier – measure sinusoidal AC current and voltage
Moving iron – measure AC current or AC voltage. Suitable for both direct or CT/VT connected applications in electrical distribution/transmission and generation panels
Bi-metal/Moving iron bi-metal - to monitor the thermal loading of transformers, motors, cables etc.
Analogue Watt/VAr meter - indicate active and reactive power
Analogue frequency meter - analog indication of frequency