Dual Measurement System: This 39.37-inch magnetic ruler features both centimeter and inch scales, ensuring versatility and precision for a variety of tasks. The clear, large markings enhance readability, making it ideal for educational and professional environments.Optimal Size for Versatility: With a width of 1.18 inches, this magnetic ruler is perfectly sized for easy handling and application on various metallic surfaces. Its length and flexibility allow for use in diverse settings, from classrooms to industrial workshops. Construction: Made from durable PVC with a soft magnet backing, this ruler adheres securely to any ferrous surface. The isotropic magnetic material may vary in adhesion based on the metal type, providing strong attachment particularly to iron.Practical Design for Multiple Uses: Designed for convenience, this magnetic ruler can be used on whiteboards, workbenches, and machinery like lathes and table saws. Its roll-up design makes it easy to store and transport, enhancing its utility in various settings.Note on Material Behavior: Please be aware that in cold conditions, the PVC and magnets may contract slightly, affecting the ruler's length. Warming it in water might help restore its original dimensions, ensuring continued accuracy and performance.Color: YellowMaterial: Rubber+MetalPackage Contents:1*Soft rulerOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.