Model of the Lowe-Vansittart Screw Propeller Blades
1869
Whirling Psychrometer, 1950-1953
1950-1953
Model of early manual fire engine, ca. 1680.
1680
Charles Green Aeronaut
1836
Motorola StarTAC mobile phone, 1997.
1997
Excell M2 Pocketphone, 1987.
1987
Vessel for growing Mould, used in Oxford, England, 1942
1940-1944
Filings coherer, glass tube bent into U-shape at one end, 1894-1904
1894-1904
horological gravers
1850-1900
Experimental carbon block microphone, 1878-1890
1878-1890
Filings coherer, glass tube almost of taper shape, 1894-1904
1894-1904
horological file
1850-1900
Kodak 'Brownie' Camera, about 1955
1953-1958
Filings coherer, Lodge-Muirhead system, 1900-1910
1900-1910
Filings coherer, glass tube containing powdered copper, bulb at one end, 1894-1904
1894-1904
Filter used to produce radioactive water
1901-1930
Wheatstone automatic tape transmitter, 1840-1860
1840-1860
Bright's bell telegraph, 1855
1855
Horological gravers with an oval profile
1850-1900
Specimen of lightweight transatlantic telephone cable, 1961
1961
Horological gravers with triangular profile
1850-1900
Hertzian receiving resonator, 1890-1894
1890-1894
Filings coherer, Lodge pattern with two wires inserted into bulb at one end, 1894-1904
1894-1904
Contraceptive Sponge
1920-1960
Plaster death mask of J.J. Lister F.R.S. (1786-1869)
1869-1927
Submarine repeater pentode P.O. type 10P, 1950-1970
195-1970
Two Perkins 'tractors'
1795-1805
Coherer, narrow-bore glass tube, 1894-1904
1894-1904
Full dentures, England, 1890-1900
1890-1900
Mullard video output pentode, T.S.P.4, 1920-1936
1920-1936
Powdered graphite microphone, 1878-1890
1878-1890
Filings coherer, small glass tube with bulb at one end and cap of red sealing wax at other end, 1898
1898
Sector by Charles Whitwell
1600-11
Gunter quadrant
1650-1725
Demonstration model with intrauterine device and inserter
1960-1979
Cut glass bottle with deeply incised decoration
1860-1900
Experimental carbon pencil microphone, 1878-1890
1878-1890
Cut glass perfume bottle with ball-top stopper
1860-1900
Gecophone broadcast receiver, model B.C 3200, 1924
1924
Filings coherer, glass tube with side-pocket attached to mounting bracket, 1894-1904
1894-1904
Pill tile, England, 1671-1730
1671-1730
Filings coherer, glass tube bent into U-shape at one end with bulb to form side-pocket on mounting bracket with terminals, 1894-1904
1894-1904
wheel cutting machine
1668-1672 Probable
Pentex production unit: B switch, 1965-1971
1965-1971
Single-needle telegraph by W. F. Cooke, 1840-1860
1840-1860
horological gravers
1850-1900
Model of adenovirus
1974-1976
Filings coherer, glass tube formed into T-shape at one end and bent round into U-shape at other end with bulb, 1899
1899
Henley's magneto electric double needle telegraph, 1848-1852
1848-1852
Pair of metal-rimmed spectacles with wire mesh protecters
1891-1920