J. A. Crabtree electric socket
1920
Electric socket
1920
Square electric wall socket with switch
electric socket
J A Crabtree electric switch
1922
Ward & Goldstone electric socket
1919
Electric socket (switch) made in England
1938
MK Electric Ltd electric switch
1953
Electric socket made by MK Electric Ltd
1923
J A Crabtree & Co Ltd electric switch
1940