Rover 'Safety' Bicycle, 1885
1885
Edison telephone, 1879
1879
Replica of Daguerre-Giroux camera
1839 (original); circa 1988 (replica)
One of Fleming's first thermionic diode valves, 1889
1889
Strowger step-by-step automatic telephone exchange switch, 1897-1898
1897-1898
Engraving: Watt's first experiment. Marcus Stone ARA pinxt; Herbert Bourne sculpt; published by Appleton & Co
1879
Brass worksplate no 517, Manning Wardle & Co
1875
Brass worksplate no 917, Manning Wardle & Co
1884
Full size wooden model of Beloe's double rail and chair
1877
Commemorative spade used to turn the first sod of the River Lee Conservancy's new cutting through Horse Shoe Point
1878
Novelty model
1955; 1830
Model vertical cylinder fire engine
circa 1885
Model of Robert Duncan's screw propeller, with stern frame and rudder, as fitted to the Egyptian government yacht 'Sareea
1886-1887
Wood-working brace drill, with button-operated latch chuck, 1875-1885
circa 1880
Silver medal, commemorates the International Health Exhibition
1884
Enamel notice, Dinorwic Quarries Railway
1895
London & South Western Railway pathway notice
1896
Small printing forme representing Linotype set matter
1886
model sykes lock and block signalling system
1875
Vertical Compound Steam Engine with Hackworth's Valve Gear, 1898
1898
The Demon Detective camera
1889
Thornton-Pickard Amber camera
circa 1897
Bo-Third Rail No D75S
1898
Cape Government locomotive and tender 4-8-0, 1896
1896
North Eastern Railway, locomotive 910
1875
Copper ore from the Bell Mine
before 1889
Arithmometer by Elliott Brothers
1885-1894
Arsenical cobalt or skutterudite, from Skutterude, near Modum, Norway
before 1889
Light-bulb, filament, carbon
About 1890
Marine thermometer by Negretti and Zambra
1890
One of Fleming's first thermionic diode valves, 1889
1889
Carriage key
1875-1890
Experimental carbon pencil microphone, 1878-1890
1878-1890
Powdered graphite microphone, 1878-1890
1878-1890
Crossley table telephone, 1879
1879
Replica of Bell's 1876 'iron-box' receiver, 1959
1876
Bell telephone, mahogany case, 1878
1878
Experimental microphone, 1878-1890
1878-1890
A T & T national telephone directory, October 1896
1896
Experimental carbon block microphone, 1878-1890
1878-1890
Experimental microphones with carbon pencils and cups, 1878-1890
1878-1890
Granular microphone in glass tube, 1878-1890
1878-1890
Coherer with coarse brass turnings, 1894
1894
Syntonic Leyden jars, 1880-1889
1880-1889
Letter opener with calendar and map, 1893-1894
1893-4
Coherer, ebonite, with adjustable contacts, 1890-1896
1890-1896
Spiral spring coherer, 1890-1894
1890-1894
Replica of the first Morse telegraph, 1835
1934
Hertzian receiving resonator, 1890-1894
1890-1894
Hertzian oscillator, 1890-1894
1890-1894