High quality materials. The outer layer of the flexible curve ruler is made of PVC, which is durable and will not fade over time. The integrated parts of the flexible curve ruler are made of metal strips, which can provide good support. Flexible and can be bent. Soft curved ruler is easy to adjust, a sturdy and flexible ruler that can be bent to measure different shapes. It is very convenient for you to measure all shapes of an object. Dual scale designs.The flexible folding ruler has an inch scale on one side and a metric scale of the other side, which allows you to make different types of measurements. The scale above is also very clear and can provide you with the most accurate measurement results. Wide use. Flexible curve ruler used for drawing, engineering, craft project and woodworking, especially for costume designers, tailors, DIY enthusiasts and engineers.