03-29-2017, 04:48 PM
Let me add my .015 worth to this thought. I can promise that after 2.5 years of testing that BESS Test media will not be the weak link in any edge sharpness test results. Instrumentation error provides a very small source of error. Operator error/inconsistency provides a greater source of error. It would be incorrect to characterize edge reading inconsistencies as "error" though. If the question is "what is the sharpness of this edge at this very finite point then BESS test media used in conjunction with BESS certified instrumentation will provide that answer very accurately. Inconsistent answers throughout the length of an edge are "information" concerning that edge and not error or repeatibility issues. Mike Brubacher with Edge On Up provided a very excellent analogy, in my opinion, on this subject when he asked "what is the temperature of your home?" It could be 70F in the rear of the house and 80F up front. You could likely find and measure a blend or average of those two temperatures somewhere in between but that would be less information and not better information.