![](https://coimages.sciencemuseumgroup.org.uk/54/216/large_thumbnail_1894_0133__0002_.jpg)
Model of William Murdock's Oscillating Engine, 1785.
1785
1785
1794
2000-100 BCE
1776
1778
circa 1800
1776-1780
1776-1780
1776-1780
1778
1783
1785
1785
1780-1800
1781-1790
1782-1793
1784
1784
1785-1790
1798
1797
1777-1785
1782
1787
hallmarked 1788
1799
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
1783
1799
1705-1737
mid-1800s
1776
1778-1780
1790
1785
1797