Compound monocular microscope
1870-1880
1870-1880
1875-1877
1893-1959
1949
circa 1904-1907
1871
1851-1855
1937
1950
1870
1900-1914
1890-1910
1853-1858
1958
1910-1920
07-04-1863
1833
1886-1910
1850-1859
1879
1900-1925
1850-1880
1871-1900
1980
1940
1860-1910
1910
1830-1837
1851-1900
1903
1871-1900
1880-1920
1937-1958
1937
1870-1880
1937-1958
circa 1880
1950-1960
1870
1937