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Message: <blockquote data-quote="Steve C" data-source="post: 3162638" data-attributes="member: 56622"><p>Without the collimator, we have no idea where the thing is pointing in relationship to the true center of axis alignment, none.  The only thing we can do is to try and assess which barrel is the most off center.  Putting the binocular on a tripod we can sorta kinda center some distant object, or center (what appears to be centered anyway) and then adjust the other barrel to the first one by eye.  That is a crap shoot, and while I have done that with a couple of older binoculars, and I think I have them very close, I will wager not one red cent that they are anywhere nearly collimated.  Personally I find it easier to not use a finder or booster scope.  It is simply another variable to try and keep centered when we have no way to really tell what is or is not centered.</p></blockquote><p></p>