Needle telegraph
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A needle telegraph is an electrical telegraph that uses indicating needles moved electromagnetically as its means of displaying messages. It is one of the two main types of electromagnetic telegraph,
A single needle telegraph (1903)
Cooke and Wheatstone five-needle telegraph
The Cooke and Wheatstone telegraph was an early electrical telegraph system dating from the 1830s invented by English inventor William Fothergill Cooke and English scientist Charles Wheatstone. It was
Needle telegraph
…earth-return telegraph put into service anywhere. The most widely used needle system, and the first telegraph of any kind used commercially, was the Cooke and Wheatstone telegraph, employed in Britain and the British Empire in the 19th and early-20th centuries, due to Charles Wheatstone and William Fothergill Cooke. The inspiration…
Cooke and Wheatstone's two-needle telegraph as used on the Great Western Railway
Wheatstone (left) and Cooke (right)
Cooke and Wheatstone 5-wire telegraph cable in a wooden spacer