Sokkia B20, Operator'S Manual, Page: 40 / 60

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5.2 FOCUSSING AND SIGHTING
1) Use the peep sight to point the
objective lens at the target.
2) Gradually turn the eyepiece until
just before the reticle cross-line
becomes blurred. (Fig.5.6) Use the
lens hood
in strong light condi-
tions. Fig.5.6
3) Use the horizontal fine motion screw
to center the target in the field of
view. Turn the 2-speed focussing
knob
to focus on the target.
(Fig.5.7)
Fig.5.7
※
Focussing is coarse while the focus-
sing knob feels heavy to rotate.
Rotating in the reverse direction (less
heavy) will give a fine focussing
motion.
4) Looking through the telescope, shift
your eyes slightly in the horizontal
and vertical directions.
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