Cooke's train signalling instrument of 1845, Norfolk Railway
1845
1845
1845
1842
1834
1834
1848
1833
1842
1837
1845
1837
1840
1841
1837
1955; 1830
1835
1837
2000-100 BCE
1893-4
circa 1840
1847
1837
1835
1846
1838
1835-1845
1934
1846
1841
1863-7
1834-1844
1837
1838
1839
1840-1845
1844
1844
1840
1836
1837
1843
1839
1834
1837
1772 (original); 1919 (model)
1846
1839
1842
1840
1930 (replica); 1834 (original)