George III's pendulum
1762
1762
1783
1785
1785
1836
1806
1815
1778
1762
1769
1765-1806
1807
1845
1790-1819
1761
1790-1819
1761
1790-1819
1782-1793
1790-1819
1776
1795-1805
1784
1762
1784
1785-1790
1762
1798
1762
1808
1762
1762
1790-1819
1790-1819
1762
1799-1802
1809
1790-1819
1790-1819
1790-1819
1845
1845
1794
1837
1834
1832
1834
1848
1834-1844
1837