There are several condensers associated with this microscope: A: Simple aperture wheel; B: High NA, multi-function condenser (see below); C, D: Darkfield condensers; E: Nicol prism condenser for PLM.
This condenser has two wheels. A: 11-positions for various aperture settings. B: Five-positions (0–4) for oblique and darkfield illumination conditions.
Darkfield stop position
Oblique lighting position.
Focus (A) and translation controls (B: Y; C: X) for the condenser mount.