Rotative Steam Engine by Boulton and Watt, 1788
1788
1788
1610; 1923
1791
1797
1785
1990-96
1772 (original); 1919 (model)
1705-1737
1785
1784
1795
1790
1784
1794
1785-1790
2000-100 BCE
1785
4000-2001 BCE
1785
hallmarked 1788
1795
1786
1785
1791
1797
1798
1784
1790-1794
1791-1792
1796
circa 1795
1790
1797
1792
1785-1789
around 1790
1795
1788
1788
1790
1785
1784
1784
1787
1792
1785-1795
1790
1792
1797
1785-1795