- Available in two sizes: 3 pieces total - two rulers measuring 12 inches (30 cm) and one ruler measuring 6 inches (15 cm) for versatile applications. - Multifunctional Design: This rolling ruler combines a protractor, triangle ruler, and parallel ruler, making it an essential tool for accurate measuring and drawing. - Built-in Sliding Roller: The innovative sliding roller feature ensures smooth movement while providing stability during drawing tasks, preventing any twisting or misalignment. - High-Quality Material: Made from durable transparent plastic, this ruler offers a smooth surface with a clear scale for easy reading. Useful formulas are printed on the roller for quick reference. - Practical Applications: - Ideal for students and professionals in geometry, architecture, and design, enabling precise measurements and drawings. - Perfect for crafting, drafting, and creating technical illustrations with accuracy and ease. - Enhanced Performance: The clear scale and multifunctional capabilities make this ruler an invaluable addition to any workspace, ensuring that you have the right tools for your projects.