The Good Measure name represents a high quality. Feel good about your choice to purchase Good Measure Rulers. The 30 degree Triangle can be used create borders, plates and other popular quilt blocks. Good Measure rulers make it easy for right- or left-handed users to position the ruler on their fabric. Abundant sight lines will short, open spaces assure accurate fabric placement under the ruler for perfect cuts every time! 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 Measure rulers are accurate, easy to read and versatile. Made in the USA!