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Johnnyh
Tinkerer
Username: Johnnyh

Post Number: 16
Registered: 06-2009

Rating: N/A
Votes: 0

Posted on Friday, September 17, 2010 - 01:24 pm:   

I find that '12BA' size screws are usable for many focus rings; I use the round-head type and cut the length to the required size.

http://en.wikipedia.org/wiki/British_Association_screw_threads

http://www.chronos.ltd.uk/acatalog/Chronos_Catalogue_Brass_BA_Screws_in_packs_of _20_297.html

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