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 SystemThe sewing ruler uses metric measurements, in centimeters. (1 inch = 2.54 cm). This sewing tool set can meet your necessary drawing and sewing needs Triangular ScaleThe triangular ruler is not in actual centimeters but to allow for changing scale Clear ScaleThe ruler is made of durable plastic with good flexibility, it is easy for you to draw pictures on paper Wide ApplicationThe sewing rulers are widely used for drawing, manual cutting, plate making and other clothing design for students, designers, pattern makers and tailors. Product Description The multifunctional sewing ruler is suitable for beginners, tailors, designers, sewing enthusiasts, providing you with convenient drawing, cutting and shaping of various clothing designs. Specification: Material: Plastic Package Includes: 1 * Comma Type Curve Ruler (Suitable for neckline, cuffs, armholes, etc.) 1 * Triangular Scale 1 * Sleeve Cage Ruler 1 * Armhole Ruler Note: 1. These rulers are not large 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. The measurements of the triangular ruler are not in actual centimeters, but to allow for scale changes.