
Rotative Steam Engine by Boulton and Watt, 1788
1788
1788
1791
1775-1799 (original); 1900-1907 (model)
circa 1800
1642-1649 (original); 1883 (model)
1668; 1924
1785
1990-96
1610; 1923
1782-1793
1772 (original); 1919 (model)
1794
2000-100 BCE
1791 - 1871
1784
1990-95
1788 - 1853
hallmarked 1788
1790
1800 - 1890
1784
1785
1705-1737
1786 - 1901
1781 - 1859
1797
1798
1790-1794
1785-1790
1790
1791-1792
1580-1588; 1930
1787
1785
1783
4000-2001 BCE
circa 1795
300 BCE; 1905-1915
1781 - 1848
1960-1979
2050-1750 BCE
1789
circa 1800
1783
1785
1784
1784
1797
1936
1800