
Rotative Steam Engine by Boulton and Watt, 1788
1788
1788
1786
1787
1790
1790
1790
1790
1785
hallmarked 1788
1785
1787
1785-1789
1785-1790
2000-100 BCE
1785
1790
1990-96
1788
1785
1785
1787
1785
1772 (original); 1919 (model)
1785
1790
1705-1737
4000-2001 BCE
1936
1790
300 BCE; 1905-1915
1788
1786
1785
1790
1786
1785
1790
1790
1788
1789
1790
1790
1788
1789
30 CE
1790
1788
30 CE
1788
1786