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Electric Lighting Switchboard, Gloucester, 1899

1899

Electrical switch

1920-1940

2 Datek Switches

Electrical switch, one of four, for physiological use, by C.F. Palmer, London, 1920-1940

Electrical switch

1920-1940

Electrical switch, one of four, for physiological use, by C.F. Palmer, London, 1920-1940

Electrical switch

1920-1940

Four electrical switches, for physiological use, by C.F. Palmer, London, 1920-1940

Four electrical switches

1920-1940

Electrical switch, one of four, for physiological use, by C.F. Palmer, London, 1920-1940

Electrical switch

1920-1940

Electrical switch, one of four, for physiological use, by C.F. Palmer, London, 1920-1940

Electrical switch

1920-1940