Tyers Train Describer, North British Railway
Telegraph block instrument, South Eastern Railway
circa 1905
Telegraph block instrument (sending)
Telegraph block instrument (sending and receiving)
Telegraph block instrument (sending and receiving)
Telegraph block instrument (sending/receiving)
Telegraph block instrument; "Niddrie North"; made by W R Sykes Interlocking Signal Co Ltd
Telegraph block instrument, early Walker's type
Telegraph block instrument
Telegraph block instrumet; "Niddrie North Junction"; made by W R Sykes Interlocking Signal Co
Cooke and Wheatstone double needle telegraph, 1844
1844
Telegraph block instrument
Telegraph block instrument; Walker's
1865
Single-line instrument (sending/receiving)
Telegraph block instrument, Great Eastern Railway
Telegraph block instrument
Telegraph block instrument (sending/receiving)
Telegraph block instrument (sending)
Double needle telegraph instrument
Telegraph block instrument, Preece's type
Telegraph block instrument; Walker's type
Telegraph block instrument in green metal case
Telegraph block instrument; South Eastern Railway; Walker's patent No. 245
1855
Telegraph instrument; single needle
Magneto-electric telegraph
Automatic cable code submarine telegraph transmitter by James White
1877
Telegraph Instrument, "15 to Mitcham Junction"
London & North Western Railway telegraph block instrument
Peas & Partners Alphabetical Telegraph Instrument
1846
Telegraph Instrument, Sutton Junction
Telegraph Instrument
Fletcher's double-line block instrument, London & North Western Railway
Great Western Railway Lamp Indicator
Route indicator, Caledonian Railway
Three telegraphic signalling block instruments
Telegraph Sender
1918-1923
Morse Key
1940-1945
experimental Lodge-Muirhead wireless telegraph receiver, 1900-1910
1900-1910
Telegraph block instrument; Sykes' Lock and Block with integral semaphore indicator
Telegraph block instrument; GER. Sykes 2-needle (Up/Up Line) 3-position absolute pegging/non-pegging instrument
Telegraph Block Instrument; Tyers Train Describer
Alexander Bain's telegraph instrument
1846
Alexander Bain's telegraph instrument
1846
Telegraph Block Instrument from Southerham Junction
Telegraph block instrument, Lancashire & Yorkshire Railway
Telegraph instrument
Telegraph block instrument, Lancashire & Yorkshire Railway
Experimental Lodge-Muirhead wireless telegraph receiver, 1900-1910
1900-1910