![](https://coimages.sciencemuseumgroup.org.uk/26/493/large_thumbnail_1876_0040.jpg)
Lord Kelvin's 'ironclad' marine galvanometer, 1865-1866
1865-1866
1865-1866
1865
1866
1865
2000-100 BCE
1893-4
1865
1864
1934
1955; 1830
1990-96
1865
1930 (replica); 1834 (original)
1865-1866
1839 (original); circa 1988 (replica)
4000-2001 BCE
1705-1737
1865
1866
1864
1870-1877
1934
1888
1865
1772 (original); 1919 (model)
1830 (original); 1967 (model)
1801-1840 (original); 1901 (model)
1775-1799 (original); 1900-1907 (model)
1865
1825; 1910
1865
1864
30 CE
30 CE
2686-2613 BCE
1866
1866
1859; 1986
1866
1866
1945-50
1865
1864
1865
1864
1865
1865
1370-1350 BCE; 1931
1931; 250 BCE
1866