Thread: What do I have?
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Old 12-27-2016   #4
sevo
Fokutorendaburando
 
sevo is offline
Join Date: Oct 2008
Location: Frankfurt, Germany
Posts: 6,363
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.
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