Is contour measurement the same as surface roughness measurement?

No. Contour measurement focuses on component geometry, while surface roughness measurement evaluates fine irregularities in surface texture.
Read full guide: https://tagintime.com/blogs/11....3201/What-Can-a-Cont

What Can a Contour Measuring Machine Reveal About the Shape and...
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What Can a Contour Measuring Machine Reveal About the Shape and...

A precision component can have the correct overall dimensions and still fail to perform properly if its contour or surface characteristics are outside the required limits. A Contour Measuring Machine helps manufacturers look beyond basic measurements