Geometrical Groin Vault, string surface model
1872
Cupriferous sandstone from Schweinkopf
before 1889
Burroughs hand operated adding and listing machine
1913
Felt and Tarrant Comptometer, 1887.
circa 1900
Comptometer by Felt and Tarrant Mfg. Co. Chicago
1915-1920
Dowsing 4-bulb electric fire by The Dowsing Radiant Heat Co. Ltd.
1901-1911
Child's Ordinary bicycle (c. 1880)
circa 1880
Replica of a hobby-horse cycle
circa 1900
Model of the periodic system of de Chancourtois
1925; 1862
horological gravers
1870-1900
Model of LNWR Third Class railway carriage
1907-1917
Model of LNWR Third Class railway carriage
1907-1917
SS Dewsbury worksplate
1910
Handlamp, London & North Eastern Railway and Great Eastern Railway
1927
Carriage key
1875-1890
Child's china tea plate, 1922-1923
1922-1923
Primax moving iron loudspeaker, 1924-1927
1924-1927
Glass-stoppered bottle containing uranium
1801-1892 (prepared); 1946 (element replaced)
General Electric CA101 Pilotron triode (McVitie Weston valve collection), 1918
1918
Jones 50-line switchboard, 1879.
1879
Edison telephone peg switchboard and pegs, 1879
1879
Card of Authority to use portable receiver, 1922
1922
Wall telephone using a Blake transmitter, 1880-1890
1880-1890
Three-valve radio receiver, 1922-1925
1922-1925
Wall telephone No. 1, 1900-1911
1900-1911
Experimental Form 1 (Licence to use Wireless Telegraph), 1905
1905
Thorpe 4-electrode valve (McVitie Weston valve collection) 1924
1924
Pair of Bell telephones, 1878
1878
V2A Marconiphone receiver (long-range model) , 1922-1924
1922-1924
Cosmos DE.11 general-purpose triode valve (McVitie Weston valve collection), 1924
1924
Zither switch with open-wire multiple and two-motion ratchet drive, 1894
1894
Amplifying valve type V24, 1920-1922
1920-1922
Ora wireless receiving triode, 1921
1921
Strowger two-motion selector with vertical mount, 1903-1920
1903-1920
Strowger step-by-step automatic telephone exchange switch, 1897-1898
1897-1898
Experimental television receiver used by JL Baird in demonstration, made 1925-1926
1925-1926
Popular Wireless no. 1 vol. 1, 1922
1922
Central Battery transmitter (sectioned), 1903-1926
1903-1926
Telephone receivers with wooden handles, 1877-1902
1877-1902
Facsimile 1865 homemade telephone, 1888
1888
K.L.1 ungettered valve, 1920-1927
1920-1927
Wall telephone with Blake transmitter, 1880-1900
1880-1900
Main part of Marconi 1.5KW transmitter from 2LO
1922-1925
Cossor Wurncell W.1 output triode valve (McVitie Weston valve collection), 1923
1923
C.W. transmitter/receiver, Mk.1, 1917
1917
Crossley telephone receiver, 1880
1880
Filings coherer, Lodge-Muirhead system, 1900-1910
1900-1910
Receiver for Baudot Multiplex type-printing telegraph, 1911-1925
1911-1925
Bell from Cable Ship 'Faraday', 1923
1923
Coherer, coarse iron turnings, 1894-1904
1894-1904