Drawing your own patterns and designs can be rewarding and make your finished products unique with your own style. We have designed some tools to help you achieve that. This square took forever for me to design on the computer. I have told a lot of folks, with my limited computer skills, I have not business owning a website! Measuring 8" on it's longest side, this can help you quickly mark your 90 and 45 degree angles, and has measuring marks on every side.