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April 1998

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TechNet <[log in to unmask]>
Subject:
Copper thickness measuring
From:
Tom Colton <[log in to unmask]>
Date:
Wed, 1 Apr 1998 15:57:20 -0500
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"TechNet E-Mail Forum." <[log in to unmask]>, Tom Colton <[log in to unmask]>
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TechNetters:

I am in need of a non-destructive method/device with which to measure
copper thickness in a finished hole from .010" to .080" diameter in
substrates from .020" to .060" thick.

Resolution should be .0001".  Any ideas?

Thanks, in advance for the guidance.

TC

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