Thread: What do I have?
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Old 12-27-2016   #5
lynnb
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Quote:
Originally Posted by sevo View Post
Does the wide end have an internal thread? And what are the thread diameters?

My guess is that it is (a part of) a microscope or telescope attachment.
If it's very small, could it be an eyepiece attachment? The thread diameter/s should give a strong clue.
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