Message:

<p>[QUOTE=&quot;slippinin, post: 1520973, member: 30421&quot;]This is probably true for the 90, 180 and even 45 degree ones, but if you&#039;re trying to pick out ones that are say 15-25 degrees off to know whether to keep them or not you may need to measure. Or if you just want to know the exact rotation since some are random. I usually just put them in a flip so the obverse is as straight as possible and then hold the reverse up to the photo of the 360* protractor right on the pc, and then use a ruler if I need to down the center of the reverse.[/QUOTE]</p><p><br /></p>

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