Size and Material: Each ruler measures 30cm with a metric system and a minimum scale of 1mm. Made from aluminum alloy, these rulers resist deformation and damage, ensuring precise measurements. The anodized prevents , enhancing . Durability and Handling: Constructed for durability and easy handling, the aluminum alloy allows for flexible operation. It's designed to be operated with one hand, making it suitable for extended use without fatigue. Design Features: Featuring a center rotation design for stable angle rotation and a clear angle scale for error-free reading, these folding rulers improve efficiency in geometric and plane drawing. The compact folding design ensures easy storage and portability. Applications: Ideal for various tasks such as geometric drawing, architectural design, and mathematical charting. Suitable for use in classrooms, art studios, and architectural environments where accurate measurement is essential. Usage and Care: To maintain accuracy and durability, avoid contact with hard objects and do not bend the rulers. Proper handling the folding rulers remain precise and stable for all your measuring needs., Weight: 0.13999353637 Pounds, Manufacturer: UieoKakeh