Description: - motor model experiment instrument tool - Educational toy for cultivating students' interest in physics, more intuitive and understand the main structure of the motor. - the relationship between armature steering and current direction and direction of field lines - Material:Specification: - 1. When conducting DC motor experiment, connect 3V~6V DC voltage to the two terminals, , normal , the increases with voltage, not turned, be manually adjusted. - 2. Pay attention to the two brushes before touching supply, cause circuit. - 3. The permanent magnet N is extremely red, S is extremely white , pay attention to the color code when installingSize Chart:Size: 14 x cm/ 5.51 x 3.5 x 4.33 inchPackage Includes:1 Crank Model