Bo-Bo No 1
1902
Queen Alexandra's Saloon
1902
model crane - little elephant
1896
Cape Government locomotive and tender 4-8-0, 1896
1896
London & North Western Railway 1st class corridor brake no. 5154
1906
"Ingersoll" wrist watch with leather strap
1915
Double surface of revolution of constant negative curvature
1910
Electric Flat Iron, 1895-1905
1895-1905
Revolution of constant negative curvature
1910
X-ray tube
1895-1899
The Ivel Agricultural Tractor
1902; 1913-1920
Selector switch, 1903
1903
Impulse sender (dial), 1915
1915
Five-line single cord switchboard, 1900-1909
1900-1909
De Forest audion 1906-1915
1906-1915
A T & T national telephone directory, October 1896
1896
Table instrument with dial, 1903
1903
Silicon crystal for wireless telegraphy, mounted in a locket, 1906-1916
1906-1916
National Telephone Company directory, 1898-1899
1898-1899
Strowger calling dial, 1906
1906
Filings coherer, glass tube with side pocket mounted on cylindrical rod with brass screw terminals at ends, 1894-1904
1894-1904
Coherer with coarse brass turnings, 1894
1894
Sample of four-core telegraph cable connecting Vancouver Island with the mainland
1904
Marconi coherer and Admiralty pattern decoherer, 1900-1910
1900-1910
Aerial inductances, 1901
1901
Filings coherer, glass tube containing powdered copper, bulb at one end, 1894-1904
1894-1904
Filings coherer, Lodge pattern with two wires inserted into bulb at one end, 1894-1904
1894-1904
Steljes ABC type printing telegraph receiver No. 477
1895-1910
Experimental form of Marconi Company magnetic detector, 1900-1910
1900-1910
Hand perforator and copy stand for Wheatstone automatic telegraph system, 1890-1910
1890-1910
'Leiber's Five Letter American Telegraph Code', book issued 1915
1915
Receiving ‘jigger’ used by the Marconi Company, 1899
1899
Experimental model of Marconi's magnetic detector, 1900-1910
1900-1910
Filings coherer, Lodge pattern, 1895-1900
1895-1900
Morse tape on which signals were recorded by means of a coherer, 1900
1900
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
Filings coherer, glass tube almost of taper shape, 1894-1904
1894-1904
Filings coherer, Lodge-Muirhead system, 1900-1910
1900-1910
Letter opener with calendar and map, 1893-1894
1893-4
Filings coherer, glass tube formed into T-shape at one end and bent round into U-shape at other end with bulb, 1899
1899
Coherer, ebonite, with adjustable contacts, 1890-1896
1890-1896
Coherer, narrow-bore glass tube, 1894-1904
1894-1904
Filings coherer, small glass tube with bulb at one end, 1894-1904
1894-1904
Experimental transmitting ‘jigger’ used by the Marconi Company, 1899
1899
Spiral spring coherer, 1890-1894
1890-1894
'Italian Navy' detector, 1899-1901
1899-1901
Replica of the first Morse telegraph, 1835
1934
Filings coherer, glass tube with side-pocket attached to mounting bracket, 1894-1904
1894-1904
Billi condenser used for aerial tuning in Newfoundland, 1901
1901
Filings coherer, Lodge-Muirhead system, 1900-1910
1900-1910