
Rotative Steam Engine by Boulton and Watt, 1788
1788
1788
1784
1786
1787
1785
hallmarked 1788
1785
1782
1787
1784
2000-100 BCE
1783
1785
1785-1789
1990-96
1705-1737
1788
1784
1785
1785
1787
1784
1783
1784
1784
1785
1772 (original); 1919 (model)
4000-2001 BCE
1785
1783-1787
1936
300 BCE; 1905-1915
1784
1782
1784
1783
1784
1788
1782
1783
1786
1785
1783
1786
1785
1788
1789
1788
1789
30 CE