Help! PDF files print slightly smaller than they should

When you print your PDF file, it prints out smaller on paper than the Word or other file it was created from. I know, it's a real pain. But you can fix it easily.

When you print from Adobe Acrobat Reader, you will see this dialog:

Click to enlarge

See that 'Print Scaling' setting? That's the one that's shrinking your PDF when you print it.

Change the setting to 'None':

Click to enlarge

Now, when you print the PDF it will print at the right size. Hurrah!