For studying the functions of the basic parts of electric motors and demonstrating how electrical energy is converted into mechanical energy. Comprised of a 2-pole D.C. armature with coils and mounted in an aluminium bracket with two binding posts and 4mm socket binding post terminals. The armature is held on brass cone bearings and a shaft ï¬tted with split commutator. Complete with two permanent magnets in adjustable holders mounted on bakelite base (I x w), about 173 x 97mm. Works on 6V D.C. power source.