14
5
Focusing on the specimen
Rotate the coarse focusing knob
a
in clockwise direction (arrow
direction) facing the microscope from right side to move the objective
c
to the specimen as close as possible.
While observing the specimen through the eyepieces, slowly rotate
the coarse focusing knob
a
in the direction opposite to the arrow
to lower the stage.
When the specimen comes into view, rotate the fine focusing knob
b
to bring the specimen into focus precisely.
1
2
3
The tension of the coarse focusing knob can be adjusted.
Insert a commercially-available flathead screwdriver into the groove
c
of
the tension adjustment ring. Rotating it clockwise (arrow direction) increases
the tension and counterclockwise decreases the tension of the coarse
focusing knob
a
.
If the stage descends by its own weight or the focus obtained
with the fine focusing knob
b
is lost soon, the tension is set
too loose. In this case, rotate the tension adjustment ring in
the arrow direction to increase the tension.
Adjusting the tension of the coarse focusing knob
4
Selecting the objective
Hold the revolving nosepiece
a
and rotate it so that the intended
objective comes exactly above the specimen.
· Do not rotate the revolving nosepiece by holding the
objective.
· Be careful if you rotate the revolving nosepiece while
observing the edge of the slide glass with the high
magnification objective (40X, etc.), the objective may
interfere with the specimen holder.
For attaching and removing the objectives, see page 29.
1
a
c
b
a
c
b
a
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