Glazed demonstration board, car starting, lighting and ignition battery (G.C. 22453) Demonstration motor car electric system
Lucas 6v battery for motor cars, sectioned, incorporating prismatic acid level indicators and combined vent plugs and drip cups. Made by Joseph Lucas Ltd., 1935 Lucas 6v battery for motor cars 1935
Trolley bus arm trip, with half section to show action, and swing head with pulley Trolley bus arm trip
Trolleybus master controller, complete with brake switch and radio interference suppression coils Trolleybus master controller
Trolleybus trolley/battery change-over switch, complete with battery contactor Trolleybus trolley/battery change-over switch