Worm and Wheel Apparatus

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 whole arrangement is fixed on heavy cast iron brackets capable to be fixed to a wall.
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 Worm Wheel comes complete with effort pulley, string and hook but without weights.