Rotative Steam Engine by Boulton and Watt, 1788
1788
1788
1610; 1923
1791
1776
1775-1799 (original); 1900-1907 (model)
1797
1785
1772 (original); 1919 (model)
1780-1800
1783-1800
1705-1737
1785
1784
1776-1780
1782-1793
1780-1800
1794
4000-2001 BCE
1777-1785
1795
2000-100 BCE
1776-1780
1785
1776-1780
1776-1780
hallmarked 1788
circa 1800
1799
1795
1781-1790
circa 1780
1786
circa 1800
1784
1797
1791
1790-1794
1776
1776-1780
1796
around 1790
1780
1791-1792
1800
circa 1795
1790
1792
1790
1795
1788