
Rotative Steam Engine by Boulton and Watt, 1788
1788
1788
1791
1668; 1924
1610; 1923
1785
1783
1785
1785
1782-1793
1782
1787
hallmarked 1788
1642-1649 (original); 1883 (model)
1785-1789
1785-1790
1784
1784
1791
1786
1787
1790
1792
1790
1790
1792
1792
1790
2000-100 BCE
1790
1785
1772 (original); 1919 (model)
1792
1791-1792
1787
1783
1784
1784
1784
1783
1790
1990-96
1784
1785
1705-1737
1788
1791
1785
1783-1787
1785
1787