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Mk II RA bino: Coupler ring detail
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Poster: GlennLeDrew (see all of this user's photos)
Description: Looking down from above, we see the turned adapter rings which attach the objective barrels to the body. The tapered end on the barrel's rear end is undersized by 2mm, thus allowing +/-1mm of off-axis positioning for collimation. When tightened by the three bolts, the connection is quite firmly secure and holds alignment well. And if required, tweaking of the alignment takes perhaps a minute.

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