
Rotative Steam Engine by Boulton and Watt, 1788
1788
1788
1786
1787
1785
hallmarked 1788
1785
1787
1785-1789
2000-100 BCE
1785
1990-96
1788
1785
1785
1787
1785
1772 (original); 1919 (model)
1785
1705-1737
4000-2001 BCE
1936
300 BCE; 1905-1915
1788
1786
1785
1786
1785
1788
1789
1788
1789
30 CE
1788
30 CE
1788
1786
1789
1789
1785
1785
20-400
30-200
20-500
20-500
1785
1972-3
1990-95
15/7/27
15/7/27
1840-160