4. Turn on the incident illumination (20) or transmitted illumination (21) or both at the same
time (
“I”
and
“II”)
according to the sample being observed.
5. Light intensity should be adjusted according to the objective used or the type of sample being
observed.
6. The angle of incident illumination can be adjusted by using the adjustment screw (8) which
can be used to vary the orientation of the lens.
B. Interpupillary adjustment
1. Looking through the eyepieces (1), move the eyepiece tubes (3) by taking hold of the prism
housing (4) and moving it outwards or inwards.
2. Interpupillary distance is correct when the two fields of view observed through both
eyepieces appear as one complete field of view.
3. Interpupillary distance should be adjusted for each new user.
C. Focusing
1. Turn the zoom knob (14) to the lowest magnification, 0.75X.
2. Place a flat object or a microscope slide on the centre of the stage (10).
3. Turn the focusing knobs (16) to mid-focus range.
4. The head holder (15) is mounted on a column (18) on which it can be moved up or down
depending on the size of the object to be focused on.
a. Support the head holder (15) with one hand without touching any lenses and with the
other loosen the screw on the support collar (17). The head holder can then be slid to the
base (11).
b. Without letting go of the head, loosen the head holder locking screw. (Fig.1)
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