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. High-Quality Construction: Made from PVC with a soft magnet backing, this ruler adheres securely to any ferrous . The isotropic magnetic material 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. Dual Measurement System: This 39.37-inch magnetic ruler features both centimeter and inch scales, ensuring versatility and for a variety of tasks. The clear, large markings enhance readability, making it ideal for educational and professional environments. 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 hot water might help restore its original dimensions, ensuring continued accuracy and performance., Weight: 0.18849523401 Pounds, Manufacturer: Taviko