Telegraph block instrument, London Brighton & South Coast Railway, single-needle type. London Brighton & South Coast Railway single needle block intrument
Telegraph block instrument, Glasgow & South Western Railway, 3-position type, with combined bell tapper and bell, from Beith North signalbox. Telegraph block instrument
Telegraph block instrument, 2-position sending and receiving type, with combined gong, Up train on line/Train arrived. Telegraph block instrument
Telegraph Block Instrument, Great Eastern Railway, 2-position absolute block type, sending and receiving with tapper and combined gong. Telegraph Block Instrument
Telegraph Block Instrument, two position, with bell and tapper, no provenance. Telegraph Block Instrument
Telegraph Block Instrument, two position, with bell and tapper, no provenance. Telegraph Block Instrument
Telegraph block instrument, Great Western Railway, single needle speaking telegraph, miniature. Great Western Railway single needle block instrument
Telegraph block instrument, Great Eastern Railway, 2-position absolute block type, sending and receiving, with tapper and combined gong, No 50. Telegraph block instrument
Telegraph Block Instrument, Glasgow & South Western Railway, 3 position type, with combined bell tapper and bell, from Beith North signalbox. Telegraph Block Instrument
Telegraph block instrument, Midland Railway, 3-position non-pegging block instrument. Non-pegging block instrument, Midland Railway