Dye Sample
circa 1890
Dye Sample
circa 1890
Dye Sample
circa 1890
Sample of Acid Yellow Dye
circa 1890
Ribbon loom with jacquard head
circa 1900
Platt Brothers Notice
1898
Platt Brothers Notice
1899
Replica of 1903 Wright Brothers' aero engine
after 1903
Circular electric hot plate for domestic cooking
1892-1900
Ring spinning frame
1901
Water pipe from Water Street, Manchester
1890-1899
Marine thermometer by Negretti and Zambra
1890
Billi condenser used for aerial tuning in Newfoundland, 1901
1901
Filings coherer, glass tube bent into U-shape at one end, 1894-1904
1894-1904
Coherer with coarse brass turnings, 1894
1894
Gold amulet in the form of a cobra
2000-100 BCE
Filings coherer, glass tube almost of taper shape, 1894-1904
1894-1904
National Telephone Company directory, 1898-1899
1898-1899
A T & T national telephone directory, October 1896
1896
Filings coherer, glass tube containing powdered copper, bulb at one end, 1894-1904
1894-1904
Hertzian receiving resonator, 1890-1894
1890-1894
Model steam locomotive
1890
Filings coherer, Lodge pattern with two wires inserted into bulb at one end, 1894-1904
1894-1904
De Forest syntoniser, 1902-1907
1902-1907
Coherer, ebonite, with adjustable contacts, 1890-1896
1890-1896
Coherer, narrow-bore glass tube, 1894-1904
1894-1904
Full dentures, England, 1890-1900
1890-1900
Experimental transmitting ‘jigger’ used by the Marconi Company, 1899
1899
Filings coherer, small glass tube with bulb at one end and cap of red sealing wax at other end, 1898
1898
Receiving ‘jigger’ used by the Marconi Company, 1899
1899
Selector switch, 1903
1903
Chromolithograph: Amalgamated Society of Engineers Machinists ... by Blades
1904
Ring transformer, 1892
1892
Letter opener with calendar and map, 1893-1894
1893-4
Replica of the first Morse telegraph, 1835
1934
Filings coherer, glass tube with side-pocket attached to mounting bracket, 1894-1904
1894-1904
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
Aerial inductances, 1901
1901
Filings coherer, glass tube formed into T-shape at one end and bent round into U-shape at other end with bulb, 1899
1899
Strowger calling dial, 1906
1906
Morse tape on which signals were recorded by means of a coherer, 1900
1900
Hertzian oscillator, 1890-1894
1890-1894
Sample of four-core telegraph cable connecting Vancouver Island with the mainland
1904
Coherer, with several needles in contact with crystal, 1894-1904
1894-1904
Filing coherer, glass tube, fitted on to mounting bracket with terminals, 1894-1904
1894-1904
Filings coherer, small glass tube with bulb at one end, 1894-1904
1894-1904
Spiral spring coherer, 1890-1894
1890-1894
Filings coherer, glass tube with side pocket mounted on cylindrical rod with brass screw terminals at ends, 1894-1904
1894-1904
Filings coherer, glass tube curved into near U-shape at one end with coil winding at other end, 1894-1904
1894-1904
Filings coherer, Lodge pattern, 1895-1900
1895-1900