![](https://coimages.sciencemuseumgroup.org.uk/55/947/large_thumbnail_1967_0005__0001_.jpg)
'Bell-crank' engine, c. 1799
1795-1805 (original)
1795-1805 (original)
1785
1793-1803
1794
2000-100 BCE
1776
1795-1805
1893-4
1778
circa 1800
1797-1804
1776-1780
1776-1780
1776-1780
1778
1783
1785
1785
circa 1805
1780-1800
1781-1790
1782-1793
1784
1784
1785-1790
1798
1797
1799-1802
1777-1785
1782
1787
hallmarked 1788
1799
1802
1805
1785-1789
1796-1797
1796-1798
1794
circa 1780
1790
1772 (original); 1919 (model)
1775-1799 (original); 1900-1907 (model)
1780
1986 (replica); 1501-1600 (original)
1776-1780
1776-1780
1784
1784
1784