Nanosurf easyScan 2 AFM, Operating Instructions Manual

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The area is selected in the same way as with the Cut out Area tool.
The calculated parameters are stored in the measurement document when
the ‘Store’ button in the Tool Results panel is clicked.
Tip
The Area Roughness tool can be used to determine the mean height differ-
ence between two plateaus with more accuracy than with the ‘Measure Dis-
tance’ tool. To determine the mean height difference, select an area on each
plateau, and calculate the difference between their Sm-values.
Correct Background
Removes the effect of a wrong scan plane when the ‘average’ and ‘plane’
Data filter options do not give satisfactory results. This may occur when the
scan lines in different parts of the measurement have a different average
height. An example of such a measurement is shown in figure
Correct Back-
ground .
To use the tool, select three points that should be on the same height. This