George III's pendulum
1762
1762
1761
1761
1762
1762
1762
1762
1762
1762
1762
2000-100 BCE
1762
1762
1986 (replica); 1501-1600 (original)
1761
1762
1761
1761
1990-96
1761
1705-1737
1762
1761
1761-1762
1761
1762
4000-2001 BCE
1761
1888-185
2000-1350
1972-3
1945-50
1990-95
1761
1761
30 CE
1761
1761
1761
1762
1762
30 CE
1066; 1876
3000-1500
3500-1000
1762
8500-2000 BCE
2686-2613 BCE
8500-2000 BCE
8500-2000 BCE