
Combined graphometer and plummet clinometer, 1663.
1663
1663
1665-1670
1668-1672 Probable
1673
1660-1665
1660-1665
1663
1640
1650
1650
1640
1640
1675
1670
1670
1670
1660
1640-1662
1672
1660
2000-100 BCE
1660-1665
1660-1665
1990-96
1666
4000-2001 BCE
1667
1640
1666
1650-1665
1654
1658
1658
1650
1658
1665-1670
1650
1650
1670
1671
1650
1660
1675
1675
1665-1666
1650-1660
1650
1640-1660
1660
1660-1665