Hey BillA, I found my photocopies from the article of reading optic interference lines, but they suck photo-quality-wise. I will see if I can dig out the original manual to scan it tomorrow.
I have access to a surface profilometer, but it cost some $ to get time on it. I will check to see how much $ and what resolution it has. Maybe I could take in samples of copper or aluminum that have different surface finishes to get a comparison.....hmmmm.
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