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Old 12-06-2018, 12:41 PM
Tropo-Bob (Bob)
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Join Date: Sep 2013
Location: Cairns
Posts: 789
What do the circles mean?

Some of my eyepieces have a small circle with R in it, others have circle V and one has circle T. I also have a number of EPs with no such marks on them.

I know that these marks cause excitement to some, so could anybody give me a concise explanation of what they mean and if they all matter, or only some matter?

Thanks in advance.
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