Rotative Steam Engine by Boulton and Watt, 1788
1788
1788
1610; 1923
1791
1776
1775-1799 (original); 1900-1907 (model)
1797
1785
1990-96
1780-1800
1772 (original); 1919 (model)
1783-1800
1705-1737
1785
1784
1776-1780
1782-1793
1794
1780-1800
1777-1785
4000-2001 BCE
2000-100 BCE
1795
1776-1780
1785
1776-1780
1776-1780
hallmarked 1788
circa 1800
1799
circa 1780
1795
1781-1790
1786
circa 1800
1784
1797
1790-1794
1791
1796
1776
1776-1780
around 1790
1791-1792
1780
circa 1795
1790
1800
1792
1795
1790