![](https://coimages.sciencemuseumgroup.org.uk/127/579/large_thumbnail_1927_1101__0011_.jpg)
George III's cycloidal pendulum
1762
1762
2014
1837
1781-1790
1900-1909
1762
1752
1983
1838
circa 1900
1800-1872
1923
1930-1960
1650-1665
1761-1762
1933
1949
1835
1775
1752
1720
1853-1857
1909-1910
1900-1924
1900-1933 (model); 1869 (original)
1880-1890
1780-1790
1920-1925
1890 - 1910
1860-1910
1970-1979
1801-1900
1753
1955-1960
1940-1947
1867
1866 (original) 1871 (model); 1906 (rigging modified)
1900-1930
1801-1900
1900-1914
1865-1925
1920-1960