The flexible curve ruler from Prym features a flexible metal core, making it an essential tool for measuring, marking, and transferring curves and round shapes. The flexible core allows the ruler to be adjusted according to the requirements and then fully aligned. It can comfortably fit into tight curves to transfer the shape onto paper or fabric. Its uses also include measuring curves. The flexible curve ruler has a scale in centimeters on one side and a scale in inches on the other. Its length is 50 cm/20 inches.