{HEAD ~ An on/off switch} is provided by metal rod 24 to which {TAIL ~ the electrical leads} are connected and which is rotatable into and out of contact with one of the terminals of batteries 20 to complete or break the circuit between batteries 20 and motor 16 
{ HEAD ~ An on / off switch } is provided by metal rod 24 to which { TAIL ~ the electrical leads } are connected and which is rotatable into and out of contact with one of the terminals of batteries 20 to complete or break the circuit between batteries 20 and motor 16
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