The suspended type moving coil galvanometers are very sensitive. They can measure currents of the order of 10–9 ampere. But these require very careful handling. So, for general use in the laboratory and for those experiments whose sensitivity is not required, pointer type galvanometers are used.
In this type of galvanometer, the coil is pivoted between two ball-bearings.Alight aluminium pointer is attached to the moving coil. The controlling couple is provided with the help of a spring.
