- Design and flexibility: The comma-shaped curve ruler uses special technology, with extremely thin and clear lines for high accuracy and good flexibility. It can be bent 360 degrees for versatile drafting. - Clear metric markings: The transparent body features clear metric markings to enable precise measurement, making it an ideal tool for manual cutting plates and related tasks. - Wide application: The DIY sewing teacher is suitable for drawing, cutting, plates, and other garments. This ruler is a practical choice for DIY projects. - Target users: This French curve metric sewing ruler is specially designed for students, designers, pattern makers and tailors. - Use scenarios: - Draft curved pattern lines in fashion design classes or pattern making. - Trace and cut curved sections on fabric and plates during garment construction. - Adjust and refine patterns for plates and other garments to improve fit and finish.