the position of the viewport is not always right above your drawn object in model space.
I first zoom out with zoom extent and then I go to scalefactor and then set the viewport to 1:25.
If the object is not completely within the viewport then you can use PAN to move the viewport.
Note: double-click in the viewport to use the Scale factor and Pan.
Then double click next to the viewport to go out.
Sorry for my English.:smileyhappy:

ben