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Mechanical telephone, 1880-1920

Telecommunications

1880-1920

Hollerith 45 column horizontal electrical sorting machine, 1920-1930

Computing & Data Processing

1920-1930

Bell telephone, mahogany case, 1878

Telecommunications

1878

Model of wire screen in octagonal frame used by Heinrich Hertz, 1949

Radio Communication

1949

'Jedi' helmet, used with Cryogenic Magnetic Resonance Imaging Machine

Radiomedicine

1980

Morse sounder, 1835-1910

Telecommunications

1835-1910

Crossley telephone receiver, 1880

Telecommunications

1880

Standard morse key, 1880-1950

Telecommunications

1880-1950

Hand perforator and copy stand for Wheatstone automatic telegraph system, 1890-1910

Telecommunications

1890-1910

Britannia telephone wire joint specimen, 1900-1980

Telecommunications

1900-1980

selector switch, 1903

Telecommunications

1903

Two-wire telephone repeater, 1923-1925

Telecommunications

1923-1925

William Thomson's marine mirror galvanometer, 1850-1900

Telecommunications

1854

aerial wire for use with home broadcast receivers, 1920-1940

Radio Communication

1920-1940

Cybernetic tortoise, developed to help with studies on brain function

Psychology, Psychiatry & Anthropometry

1950-1952

Main component of Siemens ‘Elmiskop 1’ electron microscope

Microscopy (Wellcome)

1945-1955

stock exchange automatic telegraph, 1872-1880

Telecommunications

1872-1880

Specimen of Dover-Calais telegraph cable, 1851

Telecommunications

1851

Portion of the first submarine cable between Dover and Calais, 1850

Telecommunications

1850

section of first telegraph cable, 1837

Telecommunications

1837

Specimen of the first transatlantic telephone cable, 1956

Telecommunications

1956

sample of deep-sea section of first transatlantic cable, 1857-1858

Telecommunications

1857-1858

Lenses from the Finsen lamp

Therapeutics

1890-1900

Glass tube containing a portion of the first submarine cable laid between Dover and Calais, 1875-1913

Telecommunications

1875-1913

Clockwork interruptor, once owned by David Hughes, 1875-1880

Radio Communication

1875-1880

Cooke and Wheatstone 5-needle telegraph, 1837

Telecommunications

1837

Experimental microphone, 1878-1890

Telecommunications

1878-1890

Model of the ‘Optimus’ water closet, England

Domestic Appliances

1870

BBC L1 lip microphone, 1937-1960

Television

1937-1960

Ring transformer, 1892

Telecommunications

1892

Telstar maser assembly with magnet, 1962-1967

Radio Communication

1962-1967

Central Battery transmitter (sectioned), 1903-1926

Telecommunications

1903-1926

replica of Bell's 1876 centennial telephone transmitter, 1959

Telecommunications

1959

Logic door from a Ferranti Mark I computer, 1951

Computing & Data Processing

1951

two-valve short wave radio - telephonic receiver, 1927

Radio Communication

1927

Prototype ‘Manpack’ ground terminals, 1980-1989

Space Technology

1980-1989

Models of two parabolic zinc reflectors used by Heinrich Hertz, 1949

Radio Communication

1949

Cylindrical condensing chamber

King George III

1761

main frame, for Automatic Computing Engine (ACE) pilot model, 1949

Computing & Data Processing

1949

System X circuit board from digital switching subsystem, 1980

Telecommunications

1980

Copy of the receiver and alarm call of Schilling's electric telegraph, 1870-1877

Telecommunications

1870-1877

Billi condenser used for aerial tuning in Newfoundland, 1901

Radio Communication

1901

Receiving ‘jigger’ used by the Marconi Company, 1898

Radio Communication

1898

Billi condenser used for aerial tuning in Newfoundland, 1901

Radio Communication

1901

Branly tripod coherer, 1900-1910

Radio Communication

1900-1910

Section of TAT-8 transatlantic optical fibre cable, 1989

Telecommunications

1989

Double-current telegraph key, 1830-1900

Telecommunications

1830-1900

Wall telephone with battery box, 1880-1940

Telecommunications

1880-1940

Specimen of TAT3 cable, 1963

Telecommunications

1963

Edison telephone peg switchboard and pegs, 1879

Telecommunications

1879