
Rotative Steam Engine by Boulton and Watt, 1788
1788
1788
1775-1799 (original); 1900-1907 (model)
circa 1800
1785
1794
1798
1797
1800
1795
1785-1795
1785
1785
circa 1800
1785
1785-1789
1785-1790
1791
1786
1800
1787
1790
1796
1794
1800
1800
1800
1792
1795
1800
1790
1795
1795
1790
1792
1792
1790
1785-1795
2000-100 BCE
1787
hallmarked 1788
1796-1797
1796-1798
1799
1790
1990-96
circa 1795
mid-1800s
1785
1705-1737
1791