
Rotative Steam Engine by Boulton and Watt, 1788
1788
1788
1785-1790
1791
1785
1785
2000-100 BCE
1785
1787
hallmarked 1788
1785-1789
1784
1784
1791
1786
1787
1790
1792
1790
1790
1792
1792
1790
1784
1784
1784
1772 (original); 1919 (model)
4000-2001 BCE
1790
1790
1785
1792
1990-96
1791-1792
1787
1785
1705-1737
1788
1791
1784
1785
1785
1787
1990-95
1610; 1923
1642-1649 (original); 1883 (model)
1786
1960-1979
1668; 1924
1793
circa 3000 BCE