Cossor Wurncell W.1 output triode valve (McVitie Weston valve collection), 1923
1923
C.W. transmitter/receiver, Mk.1, 1917
1917
Filings coherer, Lodge-Muirhead system, 1900-1910
1900-1910
Receiver for Baudot Multiplex type-printing telegraph, 1911-1925
1911-1925
Bell from Cable Ship 'Faraday', 1923
1923
Coherer, coarse iron turnings, 1894-1904
1894-1904
Filings coherer, glass tube formed into bulbs at each end at right angles, 1899
1899
Loaded submarine telegraph cable, 1926
1926
Filings coherer, glass tube, 1898
1898
Billi condenser used for aerial tuning in Newfoundland, 1901
1901
No. I.T. Morse tape printer, 1925
1925
Receiving ‘jigger’ used by the Marconi Company, 1898
1898
Flat steel-spring (or watch-spring) coherer, 1894
1894
Filings coherer, small glass tube with bulb at one end, 1894-1904
1894-1904
Iron borings coherer (Branly type), 1894
1894
Filings coherer, glass tube capped at ends, 1894-1904
1894-1904
Filings coherer, glass tube bent at 45-degree angle at one end to form side-pocket, 1898
1898
Coherer, with steel needle inside part-wound with copper wire, 1894-1904
1894-1904
Filings coherer, Lodge-Muirhead system, 1900-1910
1900-1910
Iron borings coherer (Branly type), 1894
1894
Horseshoe magnet and keep used with experimental form of magnetic detector, 1900-1910
1900-1910
Coherer, with several needles, 1894-1904
1894-1904
Original wheel or steel-disc coherer, 1902
1902
Spark gap or knob coherer, 1889
1889
Self-winding wristwatch by John Harwood
1928
Watch by Sir John Bennett
1884
Chronometer escapement in domed glazed case by William T. Heyes
1903
Watch with complications and minute repeating by Samuel Smith & Son
1899
Hollerith 45 column horizontal electrical sorting machine, 1920-1930
1920-1930
Pendant in form of plastic model of "Heinz" gherkin
1885-1895
Amulet, hand of King Edward
1914-1918
Triple hazelnut amulet
1901-1916
Shamrock amulet
1914-1918
Holy medallion used as an amulet
1900-1916
Thomas Lewis’ electrocardiograph
1930
Amuletic pendant in form of moulded metal slipper with scrollwork design and painted gold
1900-1913
Cot plaque from the Great Ormond Street Hospital
1904
Plaque for cot, Great Ormond Street Hospital
1900
Infant weighing machine
1890-1930
Necklet to cure sore throats
1914
Woollen doll amulet
1914-1918
Calliper used to measure head size
1886-1927
Therapeutic Exercise Chair, Wiesbaden, Germany, 1901-1905
1901-1905
Alarm whistle for use by psychiatric warders
1890-1914
Packet of pure quinine powder
1890-1900
Coin operated toilet lock
1890-1930
Blue glass condom mould for rubber or latex moulding
1900-1920
Electric hairbrush
1896-1900
Radium teletherapy apparatus, the radium 'bomb'
1925-1930
London bronchitis necklet
1914