
Photomicrographic microscope with sliding prism so that a second person can be shown the specimen
1851-1875
1851-1875
1858-1862
1775-1800
1775-1795
1826-1850
1800-1825
1800-1825
1751-1800
1825-1850
1871-1900
1850-1860
1851-1870
1880-1900
1820-1850
1850-1870
1871-1900