My question is about positive and negative dimensioning in ordinate dimensioning. Say I have a panel to a chassis. There is a cutout from the front and a spotface from the rear. If I dimension the hole from the front (front view) from left to right, that is a positive number. Then I give a rear view. When I dimension from the same corner (formerly on the left and now on the right side of the view) does that number now become a negative number? I understand negative and positive from the xy graph, but if the part is flipped over in the view, does that now become a negative number? My feeling is that it would still be a positive number, but I may be wrong.
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