Cooke and Wheatstone’s double-needle telegraph, 1838
1838
Cooke and Wheatstone's double needle telegraph, 1844
1844
Cooke and Wheatstone double needle telegraph, 1844
1844
Section of first telegraph cable, 1837
1837
Vertical galvanometer, 1830-1870
1830-1870
Single-needle telegraph by W. F. Cooke, 1840-1860
1840-1860
Sir W. F. Cooke's original electric alarum, 1835-1840
1835-1840
Cooke's train signalling instrument of 1845, Norfolk Railway
1845
Cooke and Wheatstone's four needle telegraph, 1838
1838
A.B.C. telegraph transmitter, 1835-1845
1835-1845
Transmitting keys for Five-needle telegraph, 1837-1846
1837-1846
Cooke and Wheatstone's A.B.C. telegraph receiver, 1839-1840
1839-1840
Cooke and Wheatstone five-needle telegraph
1837
Cooke and Wheatstone 5-needle telegraph, 1837
1837
Cooke and Wheatstone 5-needle telegraph, 1837
1837