Rotative Steam Engine by Boulton and Watt, 1788
1788
1788
1610; 1923
1801
1791
1775-1799 (original); 1900-1907 (model)
1797
1785
1799-1802
1990-96
1772 (original); 1919 (model)
1783-1800
1705-1737
1785
1784
1794
4000-2001 BCE
1795
2000-100 BCE
1802
1785
1802
hallmarked 1788
circa 1800
1793-1803
1799
1795
1786
1784
circa 1800
1797
1790-1794
1791
1796
around 1790
1791-1792
circa 1795
1790
1800
1795
1792
1790
1788
1788
1785-1789
1783
1800
1785
1800
1784
1784