Search for all terms: Material: ebonite Page 1 of 234 records found. Displaying 25 50 100 200 at a time.Next Results > Records with Images1. Morse Key Type 100A, by Marconi Company, Britain, Early 20th... 2. Morse Key Type 100A, by Marconi Company, Britain, Early 20th... 3. Triple Crystal Detector, Early 20th Century 4. Morse Key Type 971, by Marconi Company, Britain, 20th Century. 5. Double-Pole Single-Throw Switch, English, Early 20th Century 6. 'Marconi' Auto-Alarm Morse Key Type 316A, by Marconi Company,... 7. Silvertown Condensor, by GEC?, London, 1918 8. Induction Coil For Tuned Field Transmitter, by Marconi Company,... 9. Amplifier Type 91, by Marconi Company, London, c. 1918 10. 'Marconi' Wavemeter, by Marconi Company, London, 20th Century 11. Telephone Transformer Type 191A, by Marconi Company, English,... 12. 'Marconi' Auto-Alarm Buzzer Type 225, by Marconi Company, English,... 13. Bell Telephone Microphone, English, c. 1923 14. Direct Reading Portable Decremeter, by Marconi Company, English,... 15. 'Marconi' Direction Finder Type DFM2, by Marconi Company, London,... 16. 'Marconi' Direction Finder Type DFM2, by Marconi Company, London,... 17. Marconi's Oil Righi Oscillator, by Augusto Righi, Bologna,... 18. 12 Volt Fleming Valve, by Ediswan, London, c. 1905 19. 4 Volt Fleming Valve, by Royal Ediswan, London, c. 1905 20. 12 Volt Fleming Valve, by Ediswan, London, c. 1905 21. Experimental Fleming Valve, by J.A. Fleming, English, c. 1889 22. Fleming Valve, by J.A. Fleming, English, c. 1889 23. Comparator, by Lovibond, Salisbury, 1950s 24. Box of Microid Metric Weights, by Griffin & Tatlock, London 25. Marconiphone Two-Valve Receiver Type V2A and accompanying Headphones,... Next Results >
