Large 5-needle Cooke and Wheatstone telegraph, designed by William Cooke and Charles Wheatstone, England, 1837
The British pair William Cooke and Charles Wheatstone were behind the world's first practical telegraph system, which was demonstrated in 1837. Any two of the five needles in this instrument would swing to point to letters of the alphabet.
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- Lent by King's College London
- King's College London
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