Makes the needle movement faster
Helps the deflecting force to act fast
Brings the needle to its zero position
Arrests the needle without oscillations
Strengthens the deflection force
Controls the needle's movement
Provides meter with maximum sensitivity
Provide uniform distribution of magnetic flux in air gap
Low accuracy
High sensitivity
Low sensitivity
Low influence error
Tachometer
Energy meter
Ampere hour meter
Centre zero ammeter
No terminal marking
Terminal marked (+) only
One terminal coloured red
Terminal marked (+) and (-)