You can measure to any point of a loadable Family automatically with Smart Dimensions. 

Just add a vertical or horizontal reference plane that contains i.e. "Sdim" in its name:

NOTE: The 'Is Reference' parameter of the reference plane should not be equal to 'Not a Reference'.

Then select to Measure, "Sdim Ref. Planes" from selection list. In "Ref. Plane Name Contains" field, enter the containing text from your ref planes.