Maudslay 's Lord Chancellor bench micrometer
1805
1805
1776
1883
1955-1965
1889
1889
1850-1900
1893
1910-1940
circa 1960
1944
1878-1867 (design)
1826-1894
1856
1901
1922-1928
1920-1939
circa 1890
1900
1826-1894
circa 1900
1884
1930-1950
1881
1939
1913-1929
1930
1801-1811
1801-1811
1920-1939
1960
1745
1924
1876