Zither switch with open-wire multiple and two-motion ratchet drive, 1894
1894
Edison carbon button transmitter No. 32, 1878
1878
Facsimile 1865 homemade telephone, 1888
1888
Bell Transmitter with Membrane Diaphragm, 1875-1877
1875-1877
Thomson's mirror galvanometer, 1858
1858
'Thunder pump' magneto-electric device, 1856
1856
Letter to The Atlantic Telegraph Company, 1859
1859
William Thomson's marine mirror galvanometer, 1850-1900
1854
Bas-relief head and shoulders of Guglielmo Marconi, 1903
1903
Hughes microphone detector, 1865-1875
1865-1875
Replica of Morse's second model of telegraphy apparatus, 1934
1934
Billi condenser used for aerial tuning in Newfoundland, 1901
1901
Receiving ‘jigger’ used by the Marconi Company, 1898
1898
Embossing telegraph receiver 1878-1900
1878-1900
Sample of transatlantic cable, 1865-66
1865-1866
Chart of the Atlantic showing proposed course of the Atlantic Cable, 1856-1857
1856-1857
Sample of 1851 Dover-Calais telegraph cable, 1851
1851
Copy of the Receiver and Alarm Call of Schilling's Electric Telegraph, 1870-1877
1870-1877
Horseshoe magnet and keep used with experimental form of magnetic detector, 1900-1910
1900-1910
Portrait bust of Lord Kelvin, 1896
1896
Branly tripod coherer, 1900-1910
1900-1910
Watch by Waltham with a Dennison case
1904
Larmuth Loom
circa 1860
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
Ear trumpet and walking stick combined
1875-1885
Model of human eye
1870
Tongue depressor
1851-1900
Ear trumpet hearing aid
1869-1900
Wooden mask
1871-1900
Double duck-billed speculum
1871-1900
Artificial arm, below-elbow prosthesis
1895-1904
Composition pestle and mortar
1870-1901
Alarm whistle for use by psychiatric warders
1890-1914
Craniometer, stainless steel
1874-1902
Time register for recording asylum warder patrols
1870-1899
Figure group: 'The Toothdrawer', Berlin, 1870-1880
1870-1880
Galvanic brooch
1860-1916
Galvanic brooch of black vulcanite
1890-1910
Spencer Wells artery forceps
1890-1910
Richardson's galvanic amulet against diseases
1881-1900
Carbolic steam spray used by Joseph Lister
1866-1870
Green tin of sulpho-chromic catgut ligatures
1876-1900
Artifcial left arm, United States, 1915
1915
Steam locomotive, 'Bauxite'
1874
Set of 8 brass handled
1890
Panorama de Paris
1878
'Lucky Jim' toy cat mascot
circa 1915
Portrait bust of Henry Maudslay
before 1857