E.M.I. Type 12 gramophone pick-up (long-arm version produced for use with 17 inch discs) Radio Communication
Philips moving-iron cone loudspeaker, type 2119, in polygonal bakelite casing, 1929 Philips moving-iron cone loudspeaker Radio Communication
High Frequency sliding inductance on wood base (No. 71411), made by Marconi's Wireless Telegraph Company Limited, Chelmsford, Essex, England, 1900-1950 high frequency sliding inductance on wood base, 1900-1950 Radio Communication 1900-1950
Two wooden Pillar insulators fitted with sockets and plugs, made by Marconi's Wireless Telegraph Company Limited, Chelmsford, Essex, England, 1900-1950 Wooden pillar insulators, 1900-1950 Radio Communication 1900-1950