Stud field regulator, 1900-1950
1900-1950
'MPB' call sign plaque, 1900-1950
1900-1950
Lucas grapnel, 1888-1960
1888-1960
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
Ashtray and matchbox holder advertising the Eastern Telegraph Company, 1901-1929
1901-1929
'Leiber's Five Letter American Telegraph Code', book issued 1915
1915
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
Trough battery, 1801-1838
1801-1838
Cable grappling illustration, 1874-1924
1874-1924
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
Cylinder electrical machine, 1810-1817
1810-1817
Machine used for covering wires with silk and cotton, 1837
1837
Moving magnet galvanometer with dial inscribed "Greenwich Mean Time", 1843-1897
1843-1897
Clark's block signalling telegraph instrument, 1854
1854
Flag from Cable Ship 'Faraday' (sunk 1941), 1923-1941
1923-1941
Billi condenser used for aerial tuning in Newfoundland, 1901
1901
High frequency sliding inductance on wood base, 1900-1950
1900-1950
Wooden pillar insulators, 1900-1950
1900-1950
Henley needle galvanometer, 1855-1860
1855-1860
Thirty pair PVC insulated and sheathed armoured cable, 1933-1969
1933-1969
Copper busbars and ebonite insulators, 1900-1950
1900-1950
Filings coherer, glass tube bent into U-shape at one end, 1894-1904
1894-1904
Coherer with coarse brass turnings, 1894
1894
Stock Exchange automatic telegraph, 1872-1880
1872-1880
Filings coherer, glass tube almost of taper shape, 1894-1904
1894-1904
Steljes ABC type printing telegraph receiver No. 477
1895-1910
Marconi coherer and Admiralty pattern decoherer, 1900-1910
1900-1910
Filings coherer, Lodge-Muirhead system, 1900-1910
1900-1910
Filings coherer, glass tube containing powdered copper, bulb at one end, 1894-1904
1894-1904
Wheatstone automatic tape transmitter, 1840-1860
1840-1860
Syntonic Leyden jars, 1880-1889
1880-1889
Bright's bell telegraph, 1855
1855
Specimen of telegraph cable laid in Birmingham in 1856
1856
Hertzian receiving resonator, 1890-1894
1890-1894
Filings coherer, Lodge pattern with two wires inserted into bulb at one end, 1894-1904
1894-1904
Rotary convertor, 1900-1950
1900-1950
De Forest syntoniser, 1902-1907
1902-1907
Coherer, ebonite, with adjustable contacts, 1890-1896
1890-1896
Coherer, narrow-bore glass tube, 1894-1904
1894-1904