Single line staff, North Eastern Railway, Between Wharram and Fimber
1862-1912
seal die - Colne Valley and Halstead Railway
1856
Commemorative key, Railwaymen's Club and Institute
1928
Carriage key
1875-1890
Wivenhoe & Brightlingsea Railway
1861
seal die - Bishop Stortford, Dunmow and Braintree railway
1861
Railway handlamp, Southern Railway
1923-1939
Duchenne's Late C19 Magneto Electric Therapy Machine
1860-1900
RCA 955 Acorn UFH triode vale (McVitie Weston valve collection), 1935
1935
E.S.75 wireless valve, 1883-1930
1883-1930
Wall telephone with battery box, 1880-1940
1880-1940
Two-valve short wave radio - telephonic receiver, 1927
1927
Impulse sender (dial), 1915
1915
Wireless World Diary, 1933
1933
Desk telephone transmitter and receiver (sectioned), 1926.
1926
Radio tuning coil No. 300, 1922-1923
1922-1923
Mullard EF9 VM RF pentode valve (McVitie Weston valve collection), 1939
1939
Siemens & Halske AG radio valve, 1884-1936
1884-1936
Mullard T.H.4 radio valve, 1936
1936
Radio tuning coil No. 100, 1922-1923
1922-1923
Telephone crossbar switch, Swedish Ericsson, 1921
1921
Radio tuning coil No. 200, 1922-1923
1922-1923
Radio tuning coil No. 150, 1922-1923
1922-1923
Replica of Bell's 1876 'iron-box' receiver, 1959
1876
Straight horn loudspeaker, 1921-1926
1921-1926
Amplion loud speaker with wooden horn, 1925
1925
Mazda QP.240 battery double output pentode valve (McVitie Weston valve collection), 1935
1935
De Forest audion 1906-1915
1906-1915
S.215 dummy valve, 1920-1929
1920-1929
Cosmos crystal receiver, 1920-1930
1920-1930
Bell telephone, mahogany case, 1878
1878
A T & T national telephone directory, October 1896
1896
Instruction booklet for Cosmos crystal receiver, 1920-1930
1920-1930
Loud speaker valve type L.S.5. W/T, 1923
1923
Home made 30-line televisor, 1934
1934
Brownie crystal receiver and pair of Lissen headphones, 1924-1927
1924-1927
Strowger calling dial, 1906
1906
Magnetic key, 1850-1870
1850-1870
Mirror galvanometer for the transatlantic telegraph, 1858
1858
Stock Exchange automatic telegraph, 1872-1880
1872-1880
Thomson's mirror marine galvanometer, 1858
1858
Cable grappling illustration, 1874-1924
1874-1924
Aerial inductances, 1901
1901
Lord Kelvin's 'ironclad' marine galvanometer, 1865-1866
1865-1866
Steljes ABC type printing telegraph receiver No. 477
1895-1910
Experimental form of Marconi Company magnetic detector, 1900-1910
1900-1910
'Leiber's Five Letter American Telegraph Code', book issued 1915
1915
Receiving ‘jigger’ used by the Marconi Company, 1899
1899
Model of "Firefly" class locomotive, about 1840
1840
Stroh's type-printer for Wheatstone ABC communicator, 1870-1881
1870-1881