Optika Italy B-800 Serie Manuel D'instructions page 9

Adjust interpupillary
distance
Hold the right and left parts of
the observation head using
both hands and adjust the
interpupillary distance by
turning the two parts until one
circle of light can be seen.
(Fig.9)
Place the specimen on
the stage
Fix the specimen slide on the
mechanical stage using the
slide-clamp. Ensure that the
specimen is centred over the
stage opening. (Fig.10)
Focus tension
adjustment
Turn the tension-adjust knob
to get a suitable tension for
the focus system. (Fig.11)
NOTE: if the tension is too lo-
ose, the stage could go lower
by itself or the focus easily
lost after fine adjustment. In
this case, rotate the knob in
order to increase the friction.
Focus-stop knob
Loosen the focus-stop knob,
rotate the coarse focusing
knob to bring the slide into
focus with a 4X or 10X objecti-
ve. Then rotate the focus-stop
in order to block the height of
the stage. This simplifies the
next focusing operations.
The focus-stop knob is also
useful to avoid accidental con-
tacts between objective and
specimen. (Fig.12)
Page 9
Fig.9
Fig.10
Fig.11
Fig.12