For use in conjunction with Malvern Handwheel Drive Unit (code: PH0467I) to demonstrate eddy current braking. 120mm diameter aluminium disc with a 20mm driving pulley. The Malvern Energy Transfer Kit consists of a number of separately available units which enable the user to show conversions of one form of energy to another in a variety of different ways. All units have a base measurement of 165 x 100mm and have 4mm socket terminals where appropriate.