
Maudslay 's Lord Chancellor bench micrometer
1805
1805
1829
1806
1820
1808
1809
circa 1810
1829
circa 1805
1812
1826
1807
1815
1815
1955; 1830
1826
1808
1805
1807
1810-1817
1893-4
1808
1807
1821
1805
1812
1805-1815
1830
1807
1812
circa 1808
1807
1814
1816
1825
1815-1825
2000-100 BCE
1813
1820-1830
1815
1863-7
1829
1810-1830
1829
circa 1821-1825
1821
1821
1772 (original); 1919 (model)
1826
1819