
model sykes lock and block signalling system
1875
1875
1893-4
1934
2000-100 BCE
1610; 1923
1875
1955; 1830
1875
1876
1876
1872 (original); 1909 (model)
1875
1990-96
1876
1772 (original); 1919 (model)
1801-1840 (original); 1901 (model)
1775-1799 (original); 1900-1907 (model)
1839 (original); circa 1988 (replica)
1888
1934
4000-2001 BCE
1930 (replica); 1834 (original)
1874
1875
1705-1737
1874
1830 (original); 1967 (model)
1990-95
1977; 1204-1206
1730-1760 (original); 1931-1939 (replica)
1642-1649 (original); 1883 (model)
1936
1874
2050-1750 BCE
1875-1876
1668; 1924
1874
1875
1925; 1862
1876
1876
1875
1874
1875
15/7/27
1876
1876
15/7/27
1876
circa 3000 BCE