Miscellaneous: 4 WAY SWITCH WITH CRANK, 1930's
4 WAY SWITCH WITH CRANK, 1930's
School Laboratory Switch supplied by Griffin & George for Universities and Colleges.
©2007 The Museum of Technology, The Great War and WWII
Company registered in England No. 7452160, Registered Charity No.
1140352, Accredited Museum No. 2221