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Telegraph block instrument, South Eastern Railway
circa 1905
circa 1905
1886
1875
1898
circa 1890
circa 1890
circa 1890
circa 1890
1892-1902
1889
circa 1897
1877-1897
1876
1898-1908
1901
1890-1899
2000-100 BCE
1880-1890
1890-1910
1900-1909
1890-1900
1904
1879
1910
1895
1910
1882
1908
1875
1884
1901
1877
1902
1890-1910
1891-1900
circa 1885
1904
circa 1910
circa 1900
1878
1909
1910
1879
1900
1899
1872 (original); 1909 (model)
1905
1888
1955; 1830
1890