The Circle Template Ruler is designed with a simple purpose - to cut accurate circles and arcs. It makes it easy to both draw the desired cut line from circles from 1" to 7-1/2" and also to quickly add the turn line at 1/4" less. This ruler is perfect for creating the centers for Dresden-style plates using the 22.5 Degree Wedge Ruler (NN22D). Designed by Kaye England, this series of rulers will work together as a compatible set. These rulers read right to left and left to right and have perfect sight lines.