Worm and Worm Wheel
Model No. HV-EXP025
An all metallic self contained apparatususeful for demonstrating the efficiencyof worm and wheel and also theprincipal of work. Consisting of amachine cut worm gear of 25 cmdiameter, carrying a metal drum of 12cm diameter, and machine cut worm on steel spindlecarrying a 12 cm diameter pulley. The whole arrangement isfixed on heavy cast iron bracket capable to be fixed to a wall.Complete with effort pulley, string and hooks but withoutweights. A) Single Purchase b) Double Purchase c) Tripple Purchase.
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