Inside, can be seen 2 aluminium pulleys spaced one on either end of the unit and attached to the backing board. A large broad band runs around these 2 pulleys and through a round copper wound cylinder. This would act as a powerful magnet once the power on the unit was turned on. On the right is a heavy duty motor. In the centre is a capacitor and on the left is a junction box. The motor has a small shaft emerging from its rear to which is attached a white plastic gear. This, in turn, is attached to a toothed rubber belt which has its other end around a larger plastic toothed wheel attached to the pulley on the right. Once the motor starts up, the whole arrangement is set into motion. The powerful magnetic field created by the copper wound cylinder would automatically detect and pick up stray metal objects. A long black power lead emerges from the back of the unit and ends in a 3-pin plug.
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