
Telegraph block instrument, South Eastern Railway
circa 1905
circa 1905
1886
1875
1898
circa 1890
circa 1890
circa 1890
circa 1890
circa 1871
1892-1902
1889
1877-1897
1876
1901
1890-1899
2000-100 BCE
1880-1890
1890-1900
1904
1879
1895
1882
1875
1884
1901
1877
1902
1871-1900
1891-1900
circa 1885
1904
circa 1900
1878
1872
1879
1900
1899
1872 (original); 1909 (model)
1905
1888
1955; 1830
1890
1875
circa 1885
1892
1897
circa 1900
1898-1900
1871
1878-1879