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Old 3rd May 2019
Petrochemist Petrochemist is offline
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Re: Step down ring...60mm to 55mm required.

60mm is indeed an odd size, used as intermediates on some of my screw together extension tubes. I had to make do with a 58mm one, and combine it with 2 other stepping rings & a coupling ring. I eventually managed to fit the bayonet mount to a female M42 mount, now I've got another set of tubes which have 57mm intermediate threads...
Compulsive photographic Dabbler.
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