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Looking for a source for M38/52 x 0.75mm step up ring to use as an adapter for the MTC (Mamba) ocular. I have found plenty with 0.50mm thread and even bought a few that were unspecified only to find that they were 0.50mm. Thanks.
0.5mm is what I am using currently, however it is not the right thread and binds before a full turn. Although it does the trick for now I am concerned it will not be robust enough to survive a knock and may consequently damage the ocular thread.