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6) Eyepiece Diopter Adjustments
Adjust the diopter ring on the eyepiece tube according to the difference between your left and right
eyesight. This adjustment enables the user to take full advantage of the high-quality objectives,
including their parfocality.
(1) Swing the 40x objective in the optical
path. Rotate the coarse and then fine
focus knobs to bring the specimen in
focus.
(2) Switch back to the 10x (or 4x) objective.
While looking into the right eyepiece
with your right eye, focus on the
specimen by rotating the right diopter
ring and not using the focus knob.
Use your right eye.
(3) While looking into the left eyepiece with
your left eye, focus on the specimen by
rotating the left diopter ring and not
using the focus knob.
(4) Repeat the steps (1) to (3).
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Focus with this knob.
And focus with this ring.
Use your left eye.
Then focus with this ring