A direct-current galvanometer in which the current to be measured passes through a small rectangular coil suspended between the poles of a permanent horseshoe magnet. The magnetic field produced in the coil reacts with the field of the magnet producing a torque and causing the coil to rotate about the vertical axis in the field. D’Arsonval movement is used in many forms of galvanometer since it combines a high degree of sensitivity with low resistance and high damping.