4.75" Tall St. Louis Motor demonstration apparatus

4.75" St Louis Motor Demonstration is useful in demonstrating the operations of motor and generator. Consisting of a two-pole armature mounted between magnets. Steel supports are mounted on a ridged 4" Diameter plastic base. Will operate on 3 to 6 V DC. Power supply not included. This open design allows students to see each part of the motor operate, which shows basic function.