Thank you, thank you, thank you ladies! When I cut my quilt originally, I relied heavily on the markings of my cutting mat (which I've since learned is a no-no!) and a yard stick. *sigh* And I made "templates" out of some heavy card stock-type material and laid that on top of my fabric to cut out my squares.
I definitely need to start building up a honest-to-goodness quilting ruler stash.