Search for all terms: Material: nickel. 16 records found.Records with Images1. 'Melba' Telephone Microphone No C100L, by Marconi Company,... 2. Marconi Sykes Microphone, by Marconi Company, London, c. 1923 3. Magnetic Detector, by Marconi Company, London, Early 20th Century 4. Marconi Kryha Cipher Machine, by Marconiphone Company, English,... 5. Trembler Coil, by Marconi Company, English, c. 1907 6. Carborundum Detector, Early 20th Century 7. Telephone Relay, Early 20th Century 8. Gulstad Relay, by Elliott Brothers (London) Ltd, London, Early... 9. Bell Telephone Microphone, English, c. 1923 10. Tuning Condenser, by Marconi Company, English, c. 1907 11. 'Marconi' Ammeter with separate Copper? Coil, by Marconi Company,... 12. Metal Component Pair FT-162 For Radio, 20th Century 13. Giant Radio Valve, by GEC, English, 1910s 14. Bell Telephone Microphone, English, c. 1923 15. 'Marconi Otophone', by Marconi Company, London, 1923 16. Send/Receive Switch Type 103A, by Marconi Company, London,...
