![](https://coimages.sciencemuseumgroup.org.uk/73/755/large_thumbnail_1894_0106__0004_.jpg)
Combined graphometer and plummet clinometer, 1663.
1663
1663
1673
1663
1660-1665
1660-1665
1665-1670
2000-100 BCE
1680
1668-1672 Probable
1660-1665
1660-1665
1990-96
1658
1650-1665
1681
1666
4000-2001 BCE
1667
1666
1658
1675-1679
1654
1660-1665
1666-1680
1660
1665
1666
1650
1684
1681
1664
30 CE
1682
1680
1662
1660
1661
1674
1677
30 CE
2686-2613 BCE
1653-1680
1653-1680
1664
1945-50
1641-1685
1370-1350 BCE; 1931
1931; 250 BCE
1370-1350 BCE; 1931
1650