Here’s the diagram:

Making a foot-long edge is easy: just take a standard sheet of typing paper, take one corner, and fold the paper over until it meets on the edge. Then smooth the fold. The diagonal edge you’ve just made is a very close approximation of one foot; 12.02 inches, to be exact.

Measuring an inch at a time requires a second piece of paper. You’ve got a 12-inch edge, and the paper itself has an 11-inch edge, so placing them side-by-side as shown above leaves an overhang of 1.02 inches, which is almost certainly closer than you’d get by eyeballing it. With a pen or pencil, you can slide the second page up and down, marking off one inch at a time, to end up with 11 separate segments.

So there you have a foot-long edge, and an 11-inch edge divided into inches, which should be enough for most projects. It sure beats heading out to a late night convenience store and paying $3.49 for an eight-cent plastic ruler!

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