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