Most people know this trick but I just recently fell upon this little gem of a time saver! Turns out, by the magic of science, taping three #2 pencils together, magically gives you 5/8″! Which is exactly what you need for most sewing patterns. And if you do not need that much allowance, two pencils give you 3/8″. I was so happy to find this trick and put down that dang gauge ruler!