Speech memory board from System X Automatic Announcement Subsystem, 1979-1985
1979-1985
Anatomical model of the spine
1901
One of the First Rechargeable Batteries, about 1860
1860
Wheatstone printing telegraph, 1841
1841
'Electric tonic' amusement machine, Europe, 1915-1925
1915-1925
Artificial right hand, Europe
1915-1925
Cryptograph (coding and decoding machine) by Sir Charles Wheatstone, 1843-1875
1843-1875
Penicillium Mould presented by Alexander Fleming
1935
Lissen Headphones, 1922-1930
1921-1930
Pill coating machine, France, 1915-1925
1915-1925
Wooden-cased mill, Europe, 1701-1830
1701-1830
Molecular model showing the structure of insulin
1967
Enema syringe
1701-1800
Embossed hip-flask
1801-1900
Prototype of the Brougham carriage
1838
Edison cut-out and bolt switch
White porcelain ceiling rose with integral fuse
1896
Reyrolle metal-clad 5A plug to BS 196
1955
Turnswitch with fuse (wire), c.1886 [lacks cover]
1886
Fused wall-fitting switch
Walker photographic recorder
Polythene brooch
1938
Unipivot galvanometer
potentiometer no.114 - 1890
Original Evershed meter
electricity meter, Aubert clock type, 1890
Portable moving coil voltmeter
1902
Aron watt hour, clock type meter
Electrodynamometer wattmeter no.217
Hot-wire voltmeter
1893
Crompton potentiometer
Crompton 6" voltmeter no.179- c.1882, 0 - 300v.
circa 1882
moving iron ammeter
1890-1900
kilowatt-hour meter (intermittent integrating type) by Holden
Evershed's portable ohmmeter no.20818
Lord Kelvin's paralleling voltmeter
Chamberlain and Hookham DC ampere-hour meter
Brush-Geipel automatic regulator
Siemens and Halske direct current indicating and integrating watt-hour meter
Aeolipile, French 18th century
1700-1799
recording moving iron ammeter
Model of a Froment motor with brush gear (incomplete)
potential Inductor stick made by Neo Electrical Industries Ltd.
1962
Dissecting microscope, c. 1750
1745-1755
Cuff type (scroll foot) microscope by James Mann, c. 1755
1750-1760
Modified form of John Marshall's Compound microscope
1725-1735
Electricity supply meter, ampere/hour and prepayment
1906
Siemens electrodynamometer wattmeter (open instrument)
electrodynamometer voltmeter
Archibald V Hill’s thermopile used to measure heat production, England, 1950-1960
1950-1960