Model of Rotative Beam Engine by William Tongue, c. 1804
1797-1804
1797-1804
1794
circa 1800
1893-4
2000-100 BCE
1798
1797
1799-1802
hallmarked 1788
1799
1802
1796-1797
1796-1798
1793-1803
1790
1990-96
circa 1795
circa 1800
1788
1794
1799
1705-1737
mid-1800s
1790
1797
1801
1791
1772 (original); 1919 (model)
1775-1799 (original); 1900-1907 (model)
4000-2001 BCE
1792
1801
1797
1801
1791-1792
1804
1888-185
1801-1800
1796
1793
1790
1800
1800
1800
1790-1800
1793
1798-1802
1788-1794
1788-1794
1795