Megahex Ruler & Grid Paper
 

For anyone who may find such things useful…

Megahex Grid Paper (PDF)
Preview Image

The hexes are exactly the same size as the ones on the official Megahexes from SJG, so you can use this paper to make compatible custom map pieces of your own.

Megahex Ruler (PDF)
Preview Image

Made to the same scale as the Megahexes above, with "Megahex Feet" along one side and real world inches along the other.

NOTE: Be sure to print "Actual Size"; don't let Acrobat "Fit" to the paper, or it'll change the scale.