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Has anyone found prism adjustment screws on roof prism binoculars?

Peter

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About 14 years ago I purchased an new binocular, a Fujinon "2000" 7X35 porro model. Very nice for a small binoc. Foolishly I loaned them to a co-worker for his trip to the Indy 500. He dropped them on the concrete and knocked them out of alignment. I removed the covers off the top of the prisms to see if anything was loose. Voila! There were the collimating screws. Collimation was EZ.

Since then I have seen several Chinese porros with alignment screws. The only roof prism model that I have opened up was adjusted by turning the objective lens cells.

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Two dozen eyepieces, a dozen binoculars, a half dozen refractors, two reflectors and a homemade Image Intensifier Eyepiece (IIE). All products subject to change by the owner at any time.

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