The Lutterloh Pattern Making Ruler Set (2 rulers, reference C7961) is a set of rulers used in the Lutterloh garment pattern making system. The Lutterloh system, also known as the Golden Cut, was developed in Germany in 1935 by Luise Aigenberger Lutterloh, based on the golden ratio, and allows the creation of custom-made clothing patterns from a pattern book using only two body measurements: bust and hip. The rulers are the tool for reading the system's scale, allowing the patterns from the book to be transferred to the desired real size. It is a preferred option for seamstresses and pattern makers who already use or wish to begin using the Lutterloh pattern making system.