Picture and waveform monitor and camera control chassis for the Marconi Mk II television camera, 1950-1955 1950-1955
Astatic Current Indicator (No 615) marked 'Crompton's patent' maded by R E Crompton & Co circa 1878-1927
Large main Morse key, made by Marconi's Wireless Telegraph Company Limited, Chelmsford, Essex, England, 1900-1950 Main Morse key, 1900-1950 1900-1950
Receiving ‘jigger’ or oscillation transformer with single layer split secondary coil and superimposed moveable two-part primary coil, used by the Marconi Company, probably made by Marconi's Wireless Telegraphy Company, Chelmsford, Essex, England, 1899 Receiving ‘jigger’ used by the Marconi Company, 1899 1899