On a miter saw, when you're cutting a 90 degree cut, the miter saw reads zero. On a protractor, it reads 90. So it's an unending source of confusion for people. RON HAZELTON: So Mark, show me how it works.
A ruler is used to measure units of length, inches, feet and yards. Standard rulers have inches on one side and centimeters on the other. A typical ruler measures up to 12 inches, and is equivalent to 30.48 centimeters. This is also equivalent to 1 foot. Each inch on a ruler has markings in between that are a fraction of an inch.
(You can use your quilt ruler to square up any quilt square that is smaller than your ruler.). Place your quilt square under the ruler and line up the corner of the quilt square with the 5.5â³ corner of the ruler. To find the 5.5â³ corner of the ruler, find where the little lines meet to form a right angle.