Rotative Steam Engine by Boulton and Watt, 1788
1788
1788
1610; 1923
1791
1775-1799 (original); 1900-1907 (model)
circa 1800
1797
1785
1990-96
1785
1772 (original); 1919 (model)
1783-1800
1705-1737
1784
1782-1793
1795
1794
1780-1800
1784
1785
1790
1780-1800
1785-1790
2000-100 BCE
1799
hallmarked 1788
1781-1790
4000-2001 BCE
circa 1780
1785
1795
circa 1800
1791
1785
1786
1797
1790-1794
1796
1784
1798
1790
1780
1791-1792
1797
circa 1795
1788
1785-1789
1783
1792
1790
1795