George III's pendulum
1762
1762
1748-1763
1778
1762
1769
1738-1777
1755
1735-1754.
1745-1755
1735-1752
1761
1745-1755
1761
1776
1757
1762
1762
1762
1762
1752
1752
1762
1752
1762
1755
1745-1755
1750
1735-1753
1729-1753
1720
1764
1762
1762
1770
1755
circa 1750
1750-1766
1742
1740-1753
1720-1770
1750-1770
1776-1780
1778
1725-1775
1776-1780
1725-1755
2000-100 BCE
1776-1780
1750-1760
1758-1773