Magnus Theia fi Instructions Manual - page 23
Manual is about: BIOLOGICAL MICROSCOPE
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2. Remove the eyepiece lenses from the observation
tube, look into it and rotate the condenser iris dia-
phragm Lever ‚.
A good image may be obtained by adjusting the iris
diaphragm to about 80% as shown in Fig. 22. This
adjustment is required every time after the objective
is changed.
1. Hold the revolving nosepiece and rotate it until the
desired objective comes above the specimen.
Fig. 22
2