
Babbage's Analytical Engine, 1834-1871. (Trial model)
1871
1871
1872
circa 1871
1870
1872
1866-1870
1870
1865-1877
1871
1875
1775-1799 (original); 1900-1907 (model)
1871
1839 (original); circa 1988 (replica)
1868
1873
1870
1874
1865
1867-1868
1875
1877
1870-1875
1955; 1830
1873
1875
1865
1867
1867
1876
1867
1865-1866
1865
1893-4
1866
1934
1870-1877
2000-100 BCE
1876
1870s
1872 (original); 1909 (model)
1875
1870
circa 1868
1801-1840 (original); 1901 (model)
1876
1872
1865
1870-1875
1870-1875
1772 (original); 1919 (model)