'The Telegraphe (sic)', c 1795.

'The Telegraphe (sic)', c 1795.
4 0 c m
actual image size: 19cm x 32cm


Engraving and letterpres showing a 'machine for conveying intelligence with wonderful quicknes as used by the French'. Beneath an engraving of a telegraph similar to the Chappe telegraph system invented by Claude Chappe d'Auteroche (1763-1805), is an explanation of the different permutations of signal which can be given using the different positions of three inter linked wooden arms on a vertical fixed pole.

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© Science Museum / Science & Society Picture Library

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