Different styles available. 4 styles included: Triangular ruler, semi-circular ruler, multi-function ruler and comma ruler to meet all your needs. Dimensions: 4 styles of French curved sewing rulers: Triangular ruler (3220) approximately 20.3 x 11.2 cm (L x W). Approximately 28.4 x 14cm (L x W) comma ruler (3231). Semi-circular ruler (6460) approximately 24.6 x 14 cm (L x W). Multifunction ruler (6401) approximately 25.4 x 12.7 cm (L x W). Material: The ruler is made of durable, transparent, high precision plastic material with good flexibility. It helps you draw on paper easily. Unit of measure: Metric system. High quality sewing pattern tool. For Dressmakers: This multi-functional multi-style rule set is perfect for students, designers, pattern makers and dressmakers. It allows you to make your own creations. Different styles available. 4 styles included: Triangular ruler, semi-circular ruler, multi-function ruler and comma ruler to meet all your needs. Material: The ruler is made of durable, transparent, high precision plastic material with good flexibility. It helps you draw on paper easily. Features: Material: Plastic. Use: Learning to sew. Color: Transparent and red. Triangular ruler (3220): 20.3 x 11.2 cm (L x W). Comma ruler (3231): 28.4 x 14 cm (L x W). Semicircular ruler (6460): 24.6 x 14 cm (L x W). Multifunctional ruler (6401): 25.4 x 12.7 cm (L x W). Content: 4 sewing rules.