Newcon Optik 8x30 AN Military Binoculars with M22 Reticle - Manual (Page 11)

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6. OPERATION INSTRUCTIONS
6.1 Interpupillary distance adjustment
Prior to use you may like to adjust the binoculars to the
distance between your eyes (interpupillary distance).
Holding the binoculars in both hands rotate its halves
until you see one round image.
Note: The image may not be clear at this step. You will
focus it in the next step.
6.2 Focusing the binoculars
The binoculars have independent focus.
Independent focus
To focus the binoculars raise the instrument to your eyes
and close your right eye. With your left
eye open focus
the image by rotating eyepiece adjustment ring of the left
eyepiece. Repeat the procedure for the other eye.
Note : You may like to remember your dioptre settings to
set them every time you use the binoculars.