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Re: ATM COC= diametric?
The CENTER OVER CENTER (COC) stroke is over the center (approximately) of
the mirror and the tool. Exactly over the center isn't a total requirement
as you quickly get into all kinds of idiots that try to spec out what is and
isn't a COC stroke to very fine tolerances. Something like 1/4" is quite
close enough for a 8" mirror as far as I am concerned.
Bob May
http://nav.to/bobmay
bobmay@nethere.com