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Hydrostatic balance by Jesse Ramsden, London, 1785-1789
1785-1789
1785-1789
1785-1790
2000-100 BCE
1784
1782
1787
hallmarked 1788
1781-1790
1785
1783
1785
1785
1784
circa 1780
1784
1784
1783
1788
1785
1787
1783
4000-2001 BCE
1990-96
1784
1705-1737
1790
1790
1785
1780
1772 (original); 1919 (model)
1790
1787
1790
1790
1972-3
1789
2500 BCE
2000-1000
1788
1880-120
1800- 500 BCE
1801-190
1860-1715
1790
1782
2000-100 BCE
2000-1001 BCE
1990-95
1784
1790