A model of the simplest form of D.C. electric motor, having 2-pole armature
wound with enamelled copper wire, and a permanent magnetic field provided by a removable bar magnet. The construction
of the
model is completely open and all components are readily observable. A disc-type commulator is incorporated and
external
connection to the phosphorous bronze bushes is by means of a pair of 4mm sockets. The motor will operates on
6-8 volts
DC.