How to find AutoCAD drawings of parts on Digikey

Was it always this easy? How could I have not known?

First, know the manufacturer of the part I want a CAD file of the package of.

Then find that manufacturer on this list:

https://www.digikey.com/en/resources/3d-models

From the manufacturer's link on that page, again find the part. If the part has a CAD model, it will be findable when narrowing searches from this level down.

The part will have a link to the cat files on the manufacturer's site, which may or may not be correctly indexed.

Scale factor

You wouldn't think this would be so hard. From now on, I'll just remember the cicadas in the following link:

http://www.learner.org/courses/learningmath/measurement/session2/part_b/

Also, this treatise was so well written that even if it didn't answer my question there's a lot to learn from it:

http://www.markcad.com/autocad/drawingscale.htm