Interpupillary Adjustment - Nikon EDG 10x32 User Manual

Interpupillary adjustment

While looking at a subject through the eyepieces,
gently rotate the binocular body (a shown above)
so that the two circular viewfinders become one
(as shown below).
You can adjust the two circular viewfinders into
one even when the image is out of focus.
12
If the viewfield images are as shown above, the
optical axis has shifted.
If your eyes become tired or you see two images
for one target, it is recommended that you get
your binoculars inspected.
Optical axis: The direction of the eyepiece
tube (optical center).
With binoculars, the optical centers of right
and left tubes need to align.
or