Problem with DWG import

I am trying to extract some dimensions from an inserted DWG, but the dimensions I add do not match the known dimensions in the DWG.

For example, a dimension marked 3.5 in the DWG shows as 2.917 when I add the dimension(see attached).  Is there any way to proportion/scale the drawing to fix this?

Btw, the same inconsistency happens in DWG editor as well.

SolidworksImport export