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Thanks Simon
I also noted the discrepancy between the M48 filter thread's pitch in the list but left it till I could sort it. From what I know M48 is .75 pitch but I'll do some more searching on this.
There are a myriad of threads that everyone at one stage will need info on. So this is a "work in progress" I'm afraid.
I also only updated this was I am thinking of doing a 50mm finder guide-scope and wanted to know the rear internal thread. Every search I did found new and more info....just gathered momentum so just adding to Doug's thread.
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