Rotation
By rotating a drawing you can change its orientation so that it is leveled during measurements. Click the … button on the ‘Rotation in degrees’ field. On the drawing that appears, select two points along a horizontal line, e.g. two points on any line which should be horizontal in your drawing, but, probably due to misaligned placement in the scanner, appears tilted. Click Update and close to save the new rotation.
The rotation of a drawing
must be done before the scale setting and before any measurement.
To rotate
and level a drawing by 90 degrees you can select a vertical line on the drawing.
Note that the order in which you select the start and end point will determine
if the rotation is clockwise or anticlockwise.