Hi, 

I am trying to create a basic plan in AutoCAD tracing a jpeg scan of a hand drawn plan. No matter what I do I can't seem to set the units to mm. I have used UNITS and DWGUNITS from the command line and have edited the page setup for the layout via the page setup manager - all of these say that my units are in mm. When I am drawing, however, the units are definitely still in inches (I tested by drawing a line the width of the known page dimensions in the layout and by exporting to PDF and using rulers within illustrator). I am very new to CAD so I don't know if I'm doing something wrong but I have followed  the instructions in all the existing forums that I can find and nothing has worked as of yet. 

If anyone has any idea where I'm going wrong please let me know, this is quite a time sensitive short project and I seem to be stuck.

Thanks