Condenser with iris diaphragm
1851-1930
Mounting for condenser
1801-1830
Superstage condenser for drum
1780-1840
Parabolic condenser, English, 1850-1900
1851-1900
Condenser in filter tube, hinged on a stand
1901-1930
Reichert dark field condenser for microscope
1950-1970
Low power microscope condenser by Leilz
1970-1985
Low power microscope condenser by Leitz
1975-1985
Two plano convex lenses set in concentric tubes
1801-1900
Two convex lenses in concentric tubes
1801-1900
Flip-top microscope condenser
1960-1975
Convex lens in brass tube
1801-1830
Watson Holos paraboloid system, c. 1930
1921-1950
Stand for condenser lens
1851-1900
Stand for condenser lens
1831-1870
Watson phase contrast outfit, 1951 to 1965
1951-1965
Microscope condenser and mirror, with box, 1890-1900
1890-1910
Microscope condenser with crushing top lens
1958-1962