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12
m
Switch to any desired objective
l&;I
and view the specimen.
j,..
Rotate the revolving nosepiece to
its click-stop position.
In the case of using an oil-
immersion objective. apply oil
while being careful that air
bubbles do not form between the
end of the objective and the
specimen.
Manipulate the coarse focus
knob or fine focus knob to re-
focus on the specimen.
Manipulate the ND filter
insertion lever to adjust the
brightness.
(When adjusting the lamp
brightness.
turn
off the auto-
photo switch and manipulate the
brightness adjuster.)
Close the field diaphragm so that
it is just outside the field of view.
(p.24)
Close the condenser aperture
diaphragm to about 70 - 80% of
the numerical aperture of the
objective. (p.23)
BJ
Switch the objective.
m
Adjust the
brightness
with ND filters.
Sil
Readjust the focus.
Pa
Adjust the field diaphragm.
Pa
Adjust the condenser
aperture diaphragm.
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