
Rotative Steam Engine by Boulton and Watt, 1788
1788
1788
1783
1785
1785
1787
hallmarked 1788
1784
1784
1785
1786
1787
2000-100 BCE
1785
1772 (original); 1919 (model)
1990-96
1784
1784
1783
1784
1787
1783
1785
1705-1737
1788
1784
1785
1783-1787
1785
1787
4000-2001 BCE
1850-1899
1784
1774; 1923
1642-1649 (original); 1883 (model)
2000-100 BCE
30
1785
1787
1-79 CE; before 1914
1801-1700
1785
1991-1783 BCE
5000-500 BCE
2000 BCE
1991-1786 BCE
1787
1788
1787
1784
1787