Worm Wheel is an all metallic self-contained apparatus useful for demonstrating the efficiency of worm and wheel and also the principle of work. The equipment consisting of a machine cut worm gear of 25 cm diameter, carrying a metal drum of 12 cm diameter and machine cut worm on steel spindle carrying a 12 cm diameter pulley. The whole arrangement is fixed on heavy cast iron brackets capable to be fixed to a wall. The Worm Wheel comes complete with effort pulley, string and hook but without weights.
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