Hi Pascual,
Yes, it is possible. Go to your part and from the right menu select SETUP->REF DIM->CREATE->choose by surface or by edge, depending on what you want to measure->CLICK ON YOUR REFERENCES TO CREATE DIMENSION (the dimension will be shown in brackets) ->SET VIEW->ANY VIEW-> DONE.
Now, if you want to see it, then choose: SETUP->REF DIM->SHOW->pick on references used to create dimention.
Now in the drawing you will be able to show this dimension and will give you the real dimension. Check the ALLOW 3D DIMENSION to be on in your config.pro
-Hora