Comment by ramses0

1000% yes! An 8.5x11" paper is effectively a 12" ruler accurate to 2 decimal places.

Fold an 8.5" into a square (right triangle) and the long edge is exactly 12.02"

Fold that in half and you can measure 6.01", and 3.005" (exactly). You get 1.5" for free, and can fairly accurately get exactly 1" by rolling the other 3" side into thirds.

If you want to get an exact 1", you can technically get there via 11"-8.5"-1.5", and that gives you the full imperial (fractional) measurement basis, all from folding a (presumably accurate) 8.5x11" piece of paper.