To satisfy the specifications and tolerances indicated by the SF or procedures. If the difference is clearly observed on the thickness, it can be evaluated in both places where thick and thin.
Instructions or specifications dictated by the SF & satisfy the tolerances. That, if it is not so clear in the thick thick, and evaluating both thin,. < D >
Satisfy specifications & clearance ordered with a procedure book or SF. When a difference is accepted clearly by thickness, evaluate it in a thick place and both thin place one. <D>