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