This instrument comes in ballistic, conventional and D'Arsonval varieties. Any conventional type may be employed as a ballistic type, but the latter has smaller torque and higher inertia in the coil. The torque on the moving 
This instrument comes in ballistic, conventional and D'Arsonval varieties. Any conventional type may be employed as a ballistic type, but the latter has smaller torque and higher inertia in the coil. The torque on the moving coil rotates a needle to measure the current running through the coil. FTP, name this instrument used to measure a small amount of electrical current of any function of that current.
This instrument comes in ballistic, conventional and D'Arsonval varieties.
{galvanometer}