Quint Measuring Systems Circle Wedge is ideal for making circles. It can be used to make quilts, Christmas tree skirts, table clothes, placemats, skirts, hats and more. A locking screw holds an angle in position for marking, scribing or measuring. Made of unbreakable plastic under normal usage. This package contains one 9 degree circle wedge 36cm long with 2.5cm measuring. Made in USA.