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EYE DISTANCE
To reach a great and contrast panorama the binoculars have to be adjusted
to the different eye distance of different users. This adjustment happens by
bending the central hinge (1) until both fields of vision of the right-hand and
left-hand telescope completely coincide during observing any object.
EYE CUP ADJUSTMENT
The binocular is a model for spectacle wearers. Normal sighted people em-
ploy the binocular with twist-up eyecups (3). Wearer of glasses just turn the
eyecups down to use the complete panorama of the binocular.
DISTANCE ADJUSTMENT
To observe an object at different distances both clearly and in high contrast it
is useful to adjust binoculars to a special distance. While observing the object
the midwheel (2) has to be turned right or left till the clearest and richest in
contrast vision is reached.
DIOPTER ADJUSTMENT AND CENTRAL FOCUSING
1. First, focus on a distant object using the left eyepiece.
2. Then, disengage the focus wheel (2) by pulling it upwards. Now, only the
right eyepiece will be adjusted.
3. Cover the left objective lens (front) with your hand and turn the focus
wheel (2) until the image in the right eyepiece is sharp.
4. When looking through both tubes with both eyes, you should see a uni-
formly sharp image. Below the focus wheel, you will see a scale where
you can note the value if needed.
5. Finally, re-engage both tubes by pushing the focus wheel (2) back down.
MAINTENANCE AND PROTECTION
Prism binoculars do not need special care, they are nearly of attendance. If
necessary the outer lens surfaces should be cleaned with a fine hairbrush or
a soft piece of cloth. Coarse dust should remove through wash or blow before
wiping. Do not use chemical solvents and keep it in dry place!
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