Model of a telegraph on the semaphore system which belonged to the inventor, Reverend Lord George Murray, c. 1790

Aluminium message container for carrier pigeons

Heliograph or sun telegraph, invented by Sir Henry Mance, for long distance signalling, effective up to twenty miles, 1875

Piece of the Persian Gulf telegraph cable after 16 years submersion, 1850 - 1880

One of a collection of telegraph and telephone apparatus and materials - an early form of Bright's bell instrument with relay, c. 1850 - 1860

One of a collection of telegraph and telephone cables - a short length of telephone cable, having 150 conductors, insulated with paper and lead covered, 1900 - 1910

One of a historical collection of telegraph instruments - a Post Office direct current key, 2nd half 19th century

Oil lamp, on a tripod, fitted with shutters and keys for Morse code signalling at night, 1900

Oil lamp, on a tripod, fitted with shutters and keys for Morse code signalling at night, 1900

One of a group of specimens of telephone apparatus - a table pattern telephone suitable for use on central battery systems, 1910 - 1930

Complete Gower bell telephone, 1890

Small piece of Atlantic telegraph cable, 1857

Complete telephone made by William Holms, Paisley, in 1877, and worked on a line about half a mile long

Telephone of wood and metal, with diaphragm and cover missing, worked on line about half mile long, made by William Holms of Paisley, in 1877

Phone listening set, Electrophone stand in walnut with 6 Ader receivers, 1880

Specimen of telegraph cable, unidentified