
Rotative Steam Engine by Boulton and Watt, 1788
1788
1788
1785-1790
1791
1783
1785
1785
2000-100 BCE
1776
1794
1778
1785
circa 1800
1776-1780
1776-1780
1776-1780
1798
1777-1785
1782
1787
hallmarked 1788
1799
1796-1797
1796-1798
1785-1789
1780-1800
1778
1782-1793
1784
1784
1797
1781-1790
circa 1780
1784
1784
1783
1790
1784
1990-96
1775-1799 (original); 1900-1907 (model)
1776-1780
1776-1780
1797
1778-1780
1794
1799
1790
1785
1772 (original); 1919 (model)
1792
1791-1792