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July 2009

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Subject:
From:
Guy Ramsey <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Guy Ramsey <[log in to unmask]>
Date:
Fri, 31 Jul 2009 14:50:09 -0400
Content-Type:
text/plain
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text/plain (46 lines)
I always interpreted the test to be L for bow and D for twist. Length being
appropriate for Bow and the diagonal appropriate for twist. 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor Hernandez
Sent: Friday, July 31, 2009 12:15 PM
To: [log in to unmask]
Subject: [TN] IPC-TM-650 2.4.22

Fellow TechNetters:

   I need assistance/clarification on the above stated Test Method.
What is the difference in the two following section of the stated
document.  Section:  5.2.7  and 5.3.6?
In the first section I clearly understand the "D" to the Diagonal
designator measurement.  The second use the "L" designator which appears
to be the Length.   Is this formula correct?   Both formula appear to be
used to calculate the percentage of twist.   I am confused.


Victor,

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