Question

Q.7: The shown figure demonstrates the graph produced for a workpiece surface in order to evaluate its surface roughnes. off is 0.8 mm. The horizontal and vertical magnifications are 20 and 2000, respectively. Evaluate the average peak to valley, R, parameter in um? Show how you got this value on the graph? v Evaluate the maximum peak to valley, R" parameter in μm? Show how you got this value on the graph? Reference line

Answer 1

I can just show you how to get the answer. I will not be able to give the right answer because I need the paper from which you have taken the photograph. It is clearly mentioned in the question that Horizontal and vertical magnifications are 20 and 2000 respectively. Means whatever you are measuring, de-magnify horizontal dimension by 20 and vertical dimension by 2000 in order to converge to the right answer.

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