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May 1998

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Subject:
FAB: CMI hand held copper thickness checker
From:
Ed Cosper <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 11 May 1998 16:55:17 -0500
Content-Type:
text/plain
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text/plain (18 lines) 
Hi all,

Just a question. I have been having problems getting my CMI unit to read copper thickness consistently. It has typically been reading low. For instance, the meter will show .0005 to .0006 of copper on a standard .042 thru hole but a section of the same hole shows .0012.  The meter reads fine to the provided standard.  Has anyone else experienced this problem. I should note that the meter was just calibrated a few weeks ago so calibration should not be an issue.

Ed Cosper

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