History of Science Museum: Collection Database Search

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9. Marsh Chemical Test For Arsenic 10. Framed Wireless Telegraphy Notice, Britain, Mid 20th Century 11. Stud Field Regulating Rheostat, by Electric Construction Company,... 12. Stud Motor Starter, by Electric Construction Company, English,... 13. Pair Of Mounted Guard Lamps, Early 20th Century 14. Low Frequency Iron Core Inductance In Wooden Box, by Marconi... 15. Large Main Morse Key, by Marconi Company, London, Early 20th... 16. Magnetic Key Relay, by Marconi Company, London, Early 20th... 17. Large Main Condenser With Case, by Marconi Company, London,... 18. High Frequency Sliding Inductance, by Marconi Company, London,... 19. Assorted Copper Busbars And Ebonite Insulators, Early 20th... 20. Ebonite Partition Insulator, Early 20th Century 21. Large Aerial Tuning Inductance With Case, by Marconi Company,... 22. Large Main Jigger With Case, by Marconi Company, London, Early... 23. Tuning Indicator With Glass Lamp, by Marconi Company, London,... 24. Earth Arrester Plate, Early 20th Century 25. Earth Arrester Plate, Early 20th Century