This ruler is made from the same acrylic as our high-quality templates. It is thick enough to withstand some abuse yet thin enough to be able to draw and cut against it. On one side of the ruler is a 1/8" grid helping to make parallel lines a breeze. The other side of the ruler can be used for quick and easy centering. The "0" is in the center and it eliminates the need to try to do quick math in your head. Once you have one of these on your bench, you'll wonder how you ever lived without it. I gave one of these to my mom who quilts... she then brought back her friends so they could get one too!