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Heading Date Maker Place Materials Inv Num
View Record 'Marconi' Wavemeter Type No 2 c. 1906 Marconi's Wireless Telegraph Co. Ltd. London Teak, glass, steel, ebonite, leather, assorted metals. 52068
View Record 'Marconi' Wavemeter Instruction Leaflet c. 1906 Marconi's Wireless Telegraph Co. Ltd. London Paper. 98851
View Record Marconi-Osram Radio Valve Type DET 1A 20th Century Marconi-Osram Valve Co. Ltd. London Glass, nickel-plated, brass, plastic?, assorted metals. 64933
View Record 12 Volt Fleming Valve c. 1905 Ediswan. London Wood, baize, brass?, nickel, glass, ebonite. 89981
View Record Marconi Radio Valve Type MT1 c. 1919 Marconi-Osram Valve Co. Ltd. London Glass, nickel, assorted metals. 48681
View Record 'Marconi' Tuning Fork 20th Century Marconi's Wireless Telegraph Co. Ltd. London Brass, copper, nickel, steel, iron. 87284
View Record 'Marconi' Tuning Fork Type BS10 20th Century Marconi's Wireless Telegraph Co. Ltd. London Brass, copper, nickel, steel, iron. 69685
View Record Magnetic Detector 1907 Marconi's Wireless Telegraph Co. Ltd. London Mahogany, brass, ebonite, bakelite, iron. 99266
View Record 18-Inch Induction Coil 1898 Marconi's Wireless Telegraph Co. Ltd. London Mahogany, brass, ebonite, copper, ivory?, steel. 81193
View Record Morse Key Type 365 20th Century Marconi International Marine Communication Co. Ltd. London Steel, enamel, brass, nickel, ebonite. 83986
View Record Variometer And Sliding Capacitor Early 20th Century Marconi's Wireless Telegraph Co. Ltd. London Teak, copper, ebonite, nickel, steel. 44318
View Record Experimental Fleming Valve c. 1889 Prof. J.A. Fleming. London Glass, nickel, steel, ebonite, wood. 85593
View Record 4 Volt Experimental Fleming Oscillation Valve 1904 Ediswan. London Wood, glass, steel?, brass. 86405
View Record Candlestick Microphone c. 1927 Sterling Telephone & Electric Co. Ltd. London Bakelite, steel, plastic, assorted metals. 78582
View Record Three-Position Switch Early 20th Century Griffin. London Mahogany, brass, ebonite, celluloid. 40839
View Record Onwood's Patent Ohmmeter Early 20th Century Gambrell Brothers Ltd. London Teak?, glass, nickel, brass, ebonite, assorted metals. 95036
View Record Morse Tape Inker c. 1900 Siemens Brothers. London Brass, mahogany, paper, assorted metals. 20877
View Record Variometer c. 1920 Marconi's Wireless Telegraph Co. Ltd. London Ebonite, rope, porcelain, mahogany, brass, bakelite. 96466
View Record Marconi Bellini-Tosi Direction Finder c. 1916 Marconi's Wireless Telegraph Co. Ltd. London Teak, brass, bakelite, ebonite, steel?, copper. 78859
View Record Marconi Radio Valve Type MT1 Early 20th Century Marconi-Osram Valve Co. Ltd. London Glass, nickel, assorted metals. 46376

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