Rotative Steam Engine by Boulton and Watt, 1788
1788
1788
1610; 1923
1791
1775-1799 (original); 1900-1907 (model)
1797
1772 (original); 1919 (model)
1705-1737
1794
1795
2000-100 BCE
4000-2001 BCE
hallmarked 1788
1799
1795
1797
1791
1790-1794
1796
1791-1792
circa 1795
1790
around 1790
1792
1788
1788
1795
1790
1792
1797
1792
1799
1790
1668; 1924
1796-1798
1790
1796-1797
1799
1795
1795
1990-95
1791
1860-1920
1794
1790
1642-1649 (original); 1883 (model)
1790
1936
1798
1600-1500 BCE (original); 1900-1914 (copy)
1790-1794