Features: Crafted from a premium aluminum alloy and resin composite, this folding ruler combines durability with lightweight portability, featuring an innovative foldable design for compact storage and easy transport. The smoothly folding mechanism with rounded edges ensures seamless operations and enhanced safety, while the precisions markings provide accurate measurements up to 30cm when fully extended. Designed specifically for students, this child friendly measuring tool prioritizes safety with polished edges and folding button suitable for small hands. Ideal for classroom geometry lessons, homework assignments, or DIYer craft projects, its double length functionality (15cm folded/30cm extended) adapts to textbooks, art boards, and outdoor explorations. Featuring a scratch resistant surfaces and ergonomic grip, this multi functional ruler supports STEM learning activities while maintaining structural integrity through repeated folding cycles. Specifications: Component: Aluminum Alloy + Resin Color: Blue,Rose Red, Gold, Green, Red, Lake Blue, Black, Gray, Pink Total Measuring Ranges:30cm/11.81'' Folding Size:Approx.16cm/6.29''x3cm/1.18'' Package Includes: 1Piece Folding Ruler note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.