Search for all terms: Material: steel? Page 1 of 27 records found. Displaying 25 50 100 200 at a time.Next Results > Records with Images1. Culpeper Type Microscope with Case and Accessories 2. Compound Microscope with Accessories and Case, by Dunn, Scotland,... 3. Captain George's Artificial Horizon in Case, by Cary, London,... 4. Chromodiascope Free-Standing Stereoscope, by A. Lumière et... 5. Large Iolanda Switchboard, by Marconi Company, London, Early... 6. Marconi Bellini-Tosi Direction Finder, by Marconi Company,... 7. Marconi Bellini-Tosi Direction Finder, by Marconi Company,... 8. Marconi Radio Valve Type R, by Marconi Company, English, c.... 9. Marconi's Parabolic Transmitter, by Guglielmo Marconi, English,... 10. 'Marconi' Auto-Alarm Selector Type 333, by Marconi Company,... 11. Marconi Crystal Receiver Type 16, by Marconi Company, London,... 12. Multiple Oscillator, by Marconi Company, English, Early 20th... 13. Multiple Oscillator, by Marconi Company, London, Early 20th... 14. Telephone Relay Type G, by S.G. Brown, London, c. 1908 15. Marconi Kryha Cipher Machine, by Marconiphone Company, English,... 16. 'Megger' Resistance Meter, by Evershead & Vignoles Ltd., London,... 17. Tuning Condenser, Italy, c. 1907 18. Magneto-Electric Machine, Late 19th Century 19. Six Porcelain Insulators and Aerial Lead-in, 20th Century 20. Marconi Crystal Receiver Type 31, by Marconi Company, London,... 21. Magneto-Electric Machine, Late 19th Century 22. Tuning Condenser, by Marconi Company, English, c. 1907 23. 'Marconi' Ammeter with separate Copper? Coil, by Marconi Company,... 24. Bell Telephone Microphone, English, c. 1923 25. Horizontal Compound Microscope with Accessories and Case Next Results >