- Accurate Measurements: Our folding ruler features a measurement range of 0–300 mm, with engraved markings that enhance precision for all your measuring tasks. - Easy to Use: The folding mechanism allows for quick transformation into a 90-degree ruler, making it effortless to draw right angles and obtain precise measurements. - Durable and Rust-Resistant: Constructed from a robust aluminum alloy, this ruler is designed to withstand wear and tear while remaining rust-free, ensuring long-lasting performance. - Lightweight and Portable: Its compact and lightweight design makes it easy to carry in your backpack or briefcase, making it ideal for students and professionals across various fields. Use Scenarios: 1. Perfect for architects and designers who need to create accurate blueprints and layouts on the go. 2. An essential tool for carpenters and builders to ensure precise measurements and right angles during construction projects. 3. A reliable measuring instrument for students in engineering or technical courses, facilitating their projects and assignments.