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TDE/TUE
Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To Posted by Robert May on January 21, 2002 19:40:27 UTC |
The direction of the lines depends upon the side of focus you are on. I generally prefer to do the Foucault test as you get to see the numbers of where the ROC is relative to the center of the mirror and you get quantitive results - no guessing if the curve radius of the lines are right but rather actual numbers of where the ROC is.
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