How to import cad drawing in my sketchUp drawing?

I can not import any of my drawing in auto cad during the course of starting my drawing in sketch-up? How do insert drawing and how to scale your drawing?

Importing DWG/DXF files is a feature of SketchUp Pro. There are some old plugins for importing the DXF format into the free version (like DXF IN in D. Bur’s Ruby Library Depot) but I am not sure if they have been updated to work with version 2015.