From: Gregg Fokken ([email protected])
Date: Thu Nov 04 1999 - 09:34:48 PST
On Nov 4, 12:12pm, Laurence Michaels wrote:
> Subject: Re: [SI-LIST] : Recommendations for High Density PCB to PCB
Conne
> Mike Ventham wrote:
> >
> > Laurence,
> >
> > I still think you are having calculation problems.
> > Your answer was correct but
> >
> > 1 sq inch = 1000 mils * 1000 mils = 1000000 sq mil. NOT 10000 sq mil
> >(deleted )
> Ermm... No...
> 1 inch = 100 mils 1 sq inch = 10000 sq mils
> 1 meter = 1000 millimeter 1 sq meter = 1000000 sq millimeter.
>
> Contrary to SI prefixes, 1 mil isn't 1/1000 inch.
> It's 1/100 of an inch. That's one of the places I made a mistake.
According to Merriam Webster, every engineering book I own, and every board
vendor I've worked with, 1 mil = 1/1000 inch.
-- ------------------------------------------------------------------- Gregg Fokken Internet(email): [email protected] Mayo Foundation Phone: (507) 284-5692 200 1st Street S.W. FAX: (507) 284-9171 Rochester, MN 55905WWW: http://www.mayo.edu/sppdg/sppdg_home_page.html -------------------------------------------------------------------
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