Nikon SMZ25 - Adjusting the Interpupillary Distance

Chapter 7 Specific Operations
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Adjusting the Interpupillary Distance
A
djust to match the distance between your right and left eyes.
This adjustment is required for each user.
Look into both eyepieces and move the binocular part of the tube
so that the right and left fields of view merge into a single circle.
Adjusting the interpupillary distance