I think you are talking about the Mouse.
the mouse
mouse
due to reflecting torque pointer moves in one direction by due to controlling torque pointer moves in opposite direction therefore pointer oscillate in forward and backward direction.if there is no deflecting torque the device to ensure that the pointer comes to rest quickly with minimum oscillation at its correct reading position is known as damping device...
POINTER
Pointer device.
The pointer on a galvenometer moves due to magnetic force between the current carrying coil in the pointer assembly and the permanent magnet surrounding that coil.
That is normal when revving.
touch pad
compass
A weather or wind - vane .
Basically, the pointer moves due to measuring the direct current (flow of electric charge) through an electric circuit.
mouse pointer
Rollover?
Press Ctrl - Home.