Comprising a pulley wheel, 175mm diameter with an axle, driving a small pulley, 25mm diameter through a belt. The pulleys are mounted on a cast bracket. A shaft extends form the small driven pulley carries a two-arm armature in a permanent magnetic field, a built-in split ring commutator and a pair of slip rings commutator to enable the selection of Ac and DC.
This unit is connected to a lamp and a DC motor. There are two switches, one for AC/DC selection and the other for the load selection. Two 4mm terminals are to be used for connections to other loads like oscilloscope and meters.
Overall dimensions approximately 340 x 230 x 280mm