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Telegraph block instrument, South Eastern Railway
circa 1905
circa 1905
1886
1898
circa 1890
circa 1890
circa 1890
circa 1890
1892-1902
1889
circa 1897
1898-1908
1901
1890-1899
2000-100 BCE
1900-1909
1890-1900
1904
1895
1908
1884
1901
1902
1891-1900
circa 1885
1904
circa 1900
1909
1900
1899
1872 (original); 1909 (model)
1905
1888
1955; 1830
1890
circa 1885
1892
1897
circa 1900
1898-1900
1903
1901
1885-1895
1886-1887
1900
1895
1896
1886
1890 - 1900
1884
1892-1900