Stud field regulator, 1900-1950
1900-1950
'MPB' call sign plaque, 1900-1950
1900-1950
Coaxial cable sample, 1948-1967
1948-1967
Mirror galvanometer for the transatlantic telegraph, 1858
1858
Letter written by William Thomson (Lord Kelvin), 1858
1858-03-02
Guard lamps on wooden board, 1900-950
1900-1950
Lord Kelvin's 'ironclad' marine galvanometer, 1865-1866
1865-1866
Willis world clock, 1929-1935
1929-1935
Thomson's mirror marine galvanometer, 1858
1858
Atlantic Telegraph Cable Souvenir, 1873
1873-1920
Specimen of Dover-Calais telegraph cable, 1851
1851
Sample of deep-sea section of first transatlantic cable, 1857-1858
1857-1858
Atlantic cable specimen, 1865
1865
Sample of the first transatlantic cable, 1857-1858
1857-1858
Sample of deep-sea section of first transatlantic cable, 1857-1858
1857-1858
Sample of submarine telegraph cable, 1866
1866
Machine used for covering wires with silk and cotton, 1837
1837
Moving magnet galvanometer with dial inscribed "Greenwich Mean Time", 1843-1897
1843-1897
High frequency sliding inductance on wood base, 1900-1950
1900-1950
Wooden pillar insulators, 1900-1950
1900-1950
Copper busbars and ebonite insulators, 1900-1950
1900-1950
Stock Exchange automatic telegraph, 1872-1880
1872-1880
Rotary convertor, 1900-1950
1900-1950
De Forest syntoniser, 1902-1907
1902-1907
Magnetic key, 1850-1870
1850-1870
Morse key with send-receive switch, 1900-1920
1900-1920
A.B.C. telegraph transmitter, 1835-1845
1835-1845
Ashtray and matchbox holder advertising the Eastern Telegraph Company, 1901-1929
1901-1929
Ring transformer, 1892
1892
Replica of the first Morse telegraph, 1835
1934
Aerial tuning inductance, 1900-1950
1900-1950
Murray multiplex tape transmitter, 1910-1920
1910-1920
Cable for aerial installation, 1930-1962
1930-1962
Double-current telegraph key, 1830-1900
1830-1900
Iolanda transformer in wooden box, 1900-1950
1900-1950
Siemens and Halske's ABC Telegraph used in Russia
1850-1897
Low frequency iron core inductance, 1900-1950
1900-1950
Tuning indicator with lamp, 1900-1950
1900-1950
High-frequency chokes, 1900-1950
1900-1950
'Leiber's Five Letter American Telegraph Code', book issued 1915
1915
Lucas grapnel, 1888-1960
1888-1960
Steljes ABC type printing telegraph receiver No. 477
1895-1910
Trough battery, 1801-1838
1801-1838
Cable grappling illustration, 1874-1924
1874-1924
Stroh's type-printer for Wheatstone ABC communicator, 1870-1881
1870-1881
Single needle telegraph, 1846
1846
Keyboard for transmitting telegraphic messages, 1845-1851
1845-1851
Cooke and Wheatstone double needle telegraph, 1844
1844
Cooke and Wheatstone's double needle telegraph, 1844
1844
Experimental transmitting ‘jigger’ used by the Marconi Company, 1899
1899