Question about Nikon Medallion S 7380 (10x21) Binocular
This is such a common binocular problem that I hope you don't mind me pasting my generic answer below. There's no point in re-inventing the wheel.
Your binoculars either have a bent or broken yoke assembly (the bit which carries the eyepieces) or one or more prisms have came unseated.
The first repair involves replacing the entire yoke assembly: the part is expensive in comparison to the retail cost of a new pair of binoculars and with labour charges on top is not usually a cost-effective repair except on really high end models at prices far higher than yours which can be completely replaced for under US$70.
The second repair is straightforward and fairly quick for anyone with the right collimation equipment, but the screw(s) need to be secured with thread-locking liquid afterwards, and not all low cost models allow access to the adjusters after manufacturing.
I hope you manage to use this information to fix your binoculars or at least that it assists you to choose your next course of action. Please take a moment to rate the free answer I have provided for you and any testimonial which you might wish to add is always welcome!
Posted on Oct 08, 2010
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Posted on Jan 02, 2017
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