Version: This article applies to MeasureSquare 8.
Step 1 : Right click on the blueprint and select "Set Blueprint Scale".
Step 2 : Click the drop down arrow to select the scale that you want to re-scale to -> Ok
Step 3: Scale by Calibrating. If no dimensions are present in the blueprint, find a common door or any other known measurement.
Step 4: Left click on the two known points and enter the dimension once the window appears and click OK.