Hand speculum grinding/polishing machine
1780-1820
1780-1820
1910
1903-1905
1931
1951
1923
1910
1952
1985-2005
1907
1912
1940-1950
1905
1945
1968-1969
1925
1880-1885
1965
1922
1953
1992
1921-1935
1948
1937
1954
1891
1931
1993
1919
1937
1914
1919
1951
1916
1908
1953
1911
1937
1929
1904
1957