Kreo automatically scales your drawing once you open it for the first time.
Moreover, you can manually adjust the scale's results to your particular purposes. To do this, pay attention to the left bottom of the drawing area. You will see the option "Scale" there.
There are two ways of scaling a drawing in Kreo:
As soon as this process is over, all the measurements in the drawing will be correct.
Any time you are changing the scale, the items' measurements will be automatically recalculated.