Prototype of the Brougham carriage
1838
Penicillium Mould presented by Alexander Fleming
1935
One of the First Rechargeable Batteries, about 1860
1860
Cryptograph (coding and decoding machine) by Sir Charles Wheatstone, 1843-1875
1843-1875
Artificial right hand, Europe
1915-1925
Enema syringe
1701-1800
Wooden-cased mill, Europe, 1701-1830
1701-1830
Wheatstone printing telegraph, 1841
1841
Anatomical model of the spine
1901
Speech memory board from System X Automatic Announcement Subsystem, 1979-1985
1979-1985
Lissen Headphones, 1922-1930
1921-1930
Pill coating machine, France, 1915-1925
1915-1925
Metal lice comb, 'Derbac' brand, England, 1930-1940
1930-40
Mechanical equivalent of heat apparatus
1876
Chamberlain and Hookham DC ampere-hour meter
Embossed hip-flask
1801-1900
Microscope by Marshall, c. 1700
1695-1705
recording moving iron ammeter
Bucket Pump for hand spraying of cattle
One "Exide" CZG3 2 volt lead-acid accumulator
Aeolipile, French 18th century
1700-1799
Model 401 Thermo-Ammeter
moving iron ammeter
1890-1900
Reyrolle metal-clad 5A plug to BS 196
1955
Electric Construction Company mercury arc rectifier
Dissecting microscope, c. 1750
1745-1755
Aron watt hour, clock type meter
Cuff type (scroll foot) microscope by James Mann, c. 1755
1750-1760
Modified form of John Marshall's Compound microscope
1725-1735
Siemens electrodynamometer wattmeter (open instrument)
electrodynamometer voltmeter
mercury motor type electricity supply meter by Ferranti
1884
Miniature Abacus in wood
1845-1855
Siemens electro-dynamometer-ammeter
1882
One of Wheatstone's electromagnetic engines, 1841
1841
Electrodynamometer wattmeter no.217
Hot-wire voltmeter
1893
Crompton potentiometer
Crompton 6" voltmeter no.179- c.1882, 0 - 300v.
circa 1882
kilowatt-hour meter (intermittent integrating type) by Holden
Evershed's portable ohmmeter no.20818
Lord Kelvin's paralleling voltmeter
Model of a Froment motor with brush gear (incomplete)
Brush-Geipel automatic regulator
Siemens and Halske direct current indicating and integrating watt-hour meter
Edison cut-out and bolt switch
White porcelain ceiling rose with integral fuse
1896
Turnswitch with fuse (wire), c.1886 [lacks cover]
1886
Fused wall-fitting switch
