Extra/replacement rubber O-rings required on many 50mm finder tubes in order to be used with 3-point finder brackets. O-ring inner diameter = 46mm; thickness = 1.5mm. Sold individually.
Jan 6, 2011
It's pretty much the only choice.Pros:
Strong Construction,CompactCons: Comments:
This is pretty much the only choice for reticle eyepieces and for finder scopes. And it is only available here. I did purchase another brand a while back that had a flashing feature but it was big, bulky, and broke after first use.
It would be nice for these things to turn off automatically after a few hours of non use. I just can't seem to remember to turn them off and I'm always replacing batteries.
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