Ducretet switch, made by Eugene Ducretet, rue Claud Bernard 75, Paris, France, 1893. Ducretet switch 1893
Switched plug by Lundberg, 1895. (Switch operated by turning the plug) Switched plug by Lundberg,1895 1895
Two 3-pole switches for attaching to bench by clamp, by C.F. Palmer, London Two 3-pole switches for attaching to bench by clamp
Wooden panel with two mechanically linked switches and two fuses, c1910 Wooden panel with two mechanically linked switches and two fuses 1910
White china switch and fuse box attached to rectangular wooden frame, part of Dr. Riviere' s experimental apparatus, French, 1880-1920 White china switch and fuse box attached to rectangular wooden frame 1880-1920