Scaling stroke thickness in Adobe Illustrator

[AdrianJ]

I recently had this question from a past student in one of our science communication classes and thought the answer might be a useful tip for others as well.

I'm resizing my conceptual diagram and the stroke thicknesses are not shrinking along with everything else.  I know there is a simple way to fix it.  I remember the problem coming up during the class, but I can't remember exactly how to fix it.  I've tried using Illustrator help, but it's kinda useless.  Can you refresh my memory of how to do that?  I have illustrator 11 now.

In Illustrator go to Edit>Preferences>General and check the 'Scale Strokes and Effects' checkbox.

Cheers,
Adrian