★ It is a universal instrument which can be used for the measurment of AC and DC quantities.
★ The types of instrument have high value of torque to weight ratio.
★ It is very cheap due to simple.
Accuracy of any instrument depend on its design and work man ship.
Disadvantage of moving iron instrument :-
★ These instruments suffer from error due to hysteresis , frequency change and stay losses.
★ THe scale o moving iron instrument is not uniform like PMMC instrument.
★ Power constraction is higher for low voltage range.
★ Change in frequency also caused error in aC measurement.
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