• The Root Means Squared (RMS) System (also known as Rq) is not commonly used in Canada,
• The Peak to Valley method cuts the peaks off the wave, and then uses the band between to determine the roughness. This method is not commonly used in Canada.
• A simple table that basically outlines the process capabilities of a number of processes is, [ANSI B46.1-1962]
• A table of roughness measurements is given below [Krar],
