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The Hazards of Hardness Testing
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09-28-2014, 10:35 AM
BCROB
Master
Join Date: Dec 2011
Location: BC
Posts: 884
Never had an issue with mine , looks grainy to me as well......
also your test block looks like it has some serious hardness test dimples in it , may just be the picture
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R.Watson
B.C. Canada
BCROB
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