Renae's Amazing Rays tool, designed by Renae Haddadin. This unique tool is unlike any other, it was specially designed to function as both a compass and a protractor to mark large circles (up to 79") and radiating lines. Attaches to any "pinnable" surface and can be used to mark for both piecing and quilting. It is excellent for drafting Mariners Compass blocks or any pattern that needs to be divided into 16ths, 32nds or more. Center Circle is 12" in diameter and ruler is approximately 47" long.