Single needle telegraph, 1846
1846
Pair of child's orthopaedic boots
1879-1923
Experimental carbon block microphone, 1878-1890
1878-1890
Single-needle telegraph by W. F. Cooke, 1840-1860
1840-1860
Powdered graphite microphone, 1878-1890
1878-1890
Experimental carbon pencil microphone, 1878-1890
1878-1890
Experimental microphones with carbon pencils and cups, 1878-1890
1878-1890
Henley needle galvanometer, 1855-1860
1855-1860
Phrenological head, microcephalic
1820-1830
Hertzian oscillator, 1890-1894
1890-1894
Phrenological (Spreading) Calipers
1820-1850
Atlantic cable specimen, 1865
1865
Sample of deep-sea section of first transatlantic cable, 1857-1858
1857-1858
Morse tape on which signals were recorded by means of a coherer, 1900
1900
Sample of deep-sea section of first transatlantic cable, 1857-1858
1857-1858
Letter written by William Thomson (Lord Kelvin), 1858
1858-03-02
Sample of submarine telegraph cable, 1866
1866
Hertzian receiving resonator, 1890-1894
1890-1894
Straight horn loudspeaker, 1921-1926
1921-1926
Desk telephone transmitter and receiver (sectioned), 1926.
1926
Obstetrical forceps
1870s
Gutta percha snuff box, 1820-1860
1820-1860
McKay artificial left arm
1920
Wooden prosthetic hand with rigid fingers
circa 1920
Left prosthetic leg, Cyprus, 1914-1918
1914-1918
Artificial right hand, Europe
1915-1925
Granular microphone in glass tube, 1878-1890
1878-1890
Experimental microphone, 1878-1890
1878-1890
Ashtray and matchbox holder advertising the Eastern Telegraph Company, 1901-1929
1901-1929
Radio tuning coil No. 150, 1922-1923
1922-1923
Radio tuning coil No. 100, 1922-1923
1922-1923
Radio tuning coil No. 300, 1922-1923
1922-1923
Radio tuning coil No. 200, 1922-1923
1922-1923
Experimental model of Marconi's magnetic detector, 1900-1910
1900-1910
Sample of four-core telegraph cable connecting Vancouver Island with the mainland
1904
Receiving ‘jigger’ used by the Marconi Company, 1899
1899
Aerial inductances, 1901
1901
Billi condenser used for aerial tuning in Newfoundland, 1901
1901
Experimental transmitting ‘jigger’ used by the Marconi Company, 1899
1899
Experimental form of Marconi Company magnetic detector, 1900-1910
1900-1910
Sample of the first transatlantic cable, 1857-1858
1857-1858
Artificial left arm, United Kingdom, 1914-1916
1914-1916
Demonstration radio receiver
1926
Wooden pap boat
1900-1920
Difference Engine No. 1
circa 1832
'Over London-by Rail', Engraving, London, England, 1872
1872
Woollen shawl
1880-1920
Childrens Clog
circa 1880-1920
Childrens Clog
circa 1880-1920
Dye Sample; Indigo
1840s-1900