4-Piece SetOur sewing ruler set contains 4 different types of sewing rulers: comma type curve ruler, triangular scale, sleeve cage ruler, armhole ruler Metric system The sewing ruler uses metric measurements, in centimeters. (1 inch = 2.54 cm). This sewing tool set can meet your necessary drawing and sewing needs. > Clear ScaleThe ruler is made of durable plastic with good flexibility, it is easy for you to draw pictures on paper Wide ApplicationSewing rulers are widely used for the drawing, hand cutting, plate making and other apparel designs for students, designers, pattern makers and tailors. The Ruler of Multi-functional sewing is suitable for beginners, tailors, designers, sewing enthusiasts, providing you with convenient drawing, cutting and shaping of various clothing patterns. Specification: Material: Plastic Package includes: 1 x comma type curve ruler (suitable for enco lure, cuffs, armholes, etc.) 1 x triangle scale 1 x sleeve cage ruler 1 x armhole ruler Note: 1. These rulers are not big rulers, but smaller and more flexible rulers, please confirm the size before purchasing. 2. These rulers are thinner and softer, have good toughness, and are more suitable for sewing and tailoring than thicker rulers. 3. Triangular ruler measurements are not in actual centimeters, but to allow for scaling.