George III's weighted cylinder
1762
1762
1762
1762
1762
1769
2000-100 BCE
1762
1762
1762
1762
1764
1762
1762
1770
1990-96
1770
1771
1769
1705-1737
1762
1763
1762
1772-1773
1765
1762
1772 (original); 1919 (model)
4000-2001 BCE
1888-185
1772
1771
1767
1765
2000-1350
1972-3
1945-50
1990-95
1773
1763
1772
1774
1774
1773
1774
1773
30 CE
1762
1762
1774
30 CE
3500-1000