1/4 inch objective in cannister
1871-1900
Oil immersion objective by Leitz
1871-1920
Viewer, with lens set in body tube having inner glass tube and two plane discs holding ants eggs
1831-1870
Immersion objective in cannister
1880-1900
Achromatic objective with Ross thread
1840-1870
1/12 inch objective lens;Ross;English; mid 19th century
1831-1870
Combination objective
1830-1850
Dark ground stage by C. Reichert of Vienna
1901-1930
Objective with lieberkuhn
1830-1850
Triple button objective and nose piece in cannister for Carpenter style set
1825-1850
Objective by James Smith of London
1830-1850
Viewer with lens set at top of tube
1831-1870
Parabolic, silvered, side reflector for superstage illumination
1860-1880