Compound monocular microscope
1870-1880
1870-1880
1893-1959
1875-1877
1851-1855
1910-1920
1940
1980
1851-1900
1903
1890-1910
1850-1880
1870
07-04-1863
circa 1904-1907
1880-1920
1910
1853-1858
1871
1900-1925
1871-1900
1900-1914
1949
1871-1900
1879
1860-1910
1833
1830-1837
1850-1859
1800-1818
1870
1851-1855
1910-1920
1890-1900
1937
1870-1880
1970-1985
1800-1818
1925-1940
1930-1955
1900-1935
1915