The Circle Template is designed with a simple purpose - to create accurate circles and arcs. Use it to easily draw the desired cut line for circles from 1" to 7.5", and to quickly add a turn line exactly .25" from the cut line. Indispensable for creating the centers for Dresden-style plates using the 22.5 Degree Wedge ruler (#GM225D ). All Good Measure rulers are designed to be compatible with each other, ensuring accurate cuts and allowing you to utilize these rulers for all your cutting needs. Each ruler is labeled with its size or the name of the specific job it does. Good Measures rulers are accurate, easy to read, and versatile. Made in the USA!