
Telegraph block instrument, South Eastern Railway
circa 1905
circa 1905
1898
1901
2000-100 BCE
1904
1901
1902
1904
circa 1900
1900
1899
1872 (original); 1909 (model)
1905
1955; 1830
1897
circa 1900
1898-1900
1903
1901
1900
1896
circa 1900
1898
1899
after 1903
1901
1898
1901
1902
1898
1902
1896
1896
1899
1899
1901
1901
1904
1903
1903
1896
1898-1899
1934
1900
1899-1901
1899
1898
circa 1897
1903
1901