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@drøn
some of you are slightly wrong...
English/ISO ...................1.29" x 24 TPI
Campagnolo/Phil Wood.... 1.32" x 24 TPI
Old French ...................33 mm x 1.0 mm
this was taken from here http://www.sheldonbrown.com/gloss_l.html
miche and mavic both use the french lock ring threading...!