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Interpupillary Distance Adjustment
* Since the distance between the left and right eyes varies from person to person, in order to see com-
fortably while using the STABISCOPE, the distance in between the two eyepieces should be adjusted.
This can be done quickly and simply allowing anyone to use the STABISCOPE.
1
While looking through the STABISCOPE with
both eyes, move the interpupillary distance
adjustment lever until you see a single, per-
fectly circular fi eld of view. (Fig. 8)
2
If you wear glasses, simply follow step 1 after
folding the lubber eyecups back. (Fig. 9)
Focusing
1
If you have good vision and free of astigma-
tism, each eyepiece can be set at 0 on its di-
opter ring scale (Fig. 10). If you wear correc-
tive glasses, you should also be able to set
both eyepieces at 0.
In general, focusing need be done only once
for viewing distant subject. In some cases,
where the subject is very close, if may be
necessary to re-focus.
2
When focusing is required, adjust one eye-
piece until the image is sharp; then adjust
the other until both eyes see the image with
equal clarity. (Fig. 11)
3
Manual focus as described above is also nec-
essary when the target is at a short-distance
EN-5
Fig. 8
Fig. 9
Fig. 10
Fig. 11
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