Nikon Epiphot 300 Manual page 23

(6) Turn the zoom dial to select lx magnification.
(Figure right)
(7 ) Rotate the coarse focus knob to lower the
revolving nosepiece to the limit. Rotate the
nosepiece to put the lOx objective in the optical
path. Rotate the stage movement knobs to locate
the center of the opening of the stage ring almost
right above the top of that objective.
(8) Place a flat, high reflectance sample on the stage.
Face its surface to be observed downward.
(9 ) The eyepiece with a built-in mask is in the right
eyepiece sleeve.
Rotate the diopter correction ring of this eyepiece
to focus on its mask. (Figure right)
(10) View the sample through the right eyepiece.
While so doing, rotate the coarse focus and fine
fo cus knobs to focus on the sample.
Stop down the field diaphragm to make the field
diaphragm image clearly visible. This makes
focusing easier.
Field diaphragm dial
Coarse focus and fine focus knobs
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