Paper Ruler
March 9th, 2006 Chris
Tags: lifehacks | Comments Off
Need a quick way to measure an object, but have no ruler handy? Try this:
Fold a piece of 8.5×11 paper from either top corner down to the side, being careful to line everything up straight.

A little bit of trigonometry tells us that the resulting diagonal edge is 12.02 inches, which is close enough for most uses.








