High frequency sliding inductance on wood base, 1900-1950
1900-1950
Stud field regulator, 1900-1950
1900-1950
Desk telephone transmitter and receiver (sectioned), 1926.
1926
Specimen of the first transatlantic telephone cable, deep sea type, 1956
1956
Copper busbars and ebonite insulators, 1900-1950
1900-1950
Replica of Bell's 1876 centennial telephone transmitter, 1959
1959
Replicas of Alexander Graham Bell's 1879 'Patent Office' telephone, 1959
1959
Magneto-ringing Ericsson telephone, 1892-1920
1892-1920
Rotary convertor, 1900-1950
1900-1950
Guard lamps on wooden board, 1900-950
1900-1950
Section of TAT-8 transatlantic optical fibre cable, 1989
1989
Selector switch, 1903
1903
Replicas of Alexander Graham Bell's 1879 'Patent Office' telephone, 1959
1959
Impulse sender (dial), 1915
1915
Specimen of TAT3 cable, 1963
1963
Iolanda transformer in wooden box, 1900-1950
1900-1950
Low frequency iron core inductance, 1900-1950
1900-1950
Bell telephone, mahogany case, 1878
1878
Technics SL-1210 Mk2 mode quartz synthesizer direct-drive turntable: one of two
1999
Cybernetic tortoise, developed to help with studies on brain function
1950-1952
Patient side cart, from da Vinci® Classic surgical system
1999-2001
Surgeon console, from da Vinci® Classic surgical system
1999-2001
Light-bulb, filament, carbon
About 1890
Steam locomotive, entitled Evening Star
1960
System X circuit board from digital switching subsystem, 1980
1980
London & North Eastern Railway Steam Locomotive, 'Flying Scotsman'
1923
Ring transformer, 1892
1892
Cable for aerial installation, 1930-1962
1930-1962
Specimen of Dover-Calais telegraph cable, 1851
1851
Double-current telegraph key, 1830-1900
1830-1900
Sample of submarine telegraph cable, 1866
1866
Stock Exchange automatic telegraph, 1872-1880
1872-1880
Atlantic cable specimen, 1865
1865
Two-valve short wave radio - telephonic receiver, 1927
1927
Mirror galvanometer for the transatlantic telegraph, 1858
1858
Moving magnet galvanometer with dial inscribed "Greenwich Mean Time", 1843-1897
1843-1897
Dr. Mays and Dr. Prinz's Relay-operated logic machine
1951
Siemens and Halske's ABC Telegraph used in Russia
1850-1897
Steam locomotive No. 1 'Locomotion', Stockton & Darlington Railway
1825
Wall telephone, 1880-1920
1880-1920
Experimental carbon block microphone, 1878-1890
1878-1890
Marconi coherer and Admiralty pattern decoherer, 1900-1910
1900-1910
Wall telephone with battery box, 1880-1940
1880-1940
Mechanical telephone, 1880-1920
1880-1920
Wheatstone automatic tape transmitter, 1840-1860
1840-1860
Bright's bell telegraph, 1855
1855
Specimen of lightweight transatlantic telephone cable, 1961
1961
Specimen of television cable, 1936
1936
Coherer, ebonite, with adjustable contacts, 1890-1896
1890-1896
Powdered graphite microphone, 1878-1890
1878-1890