0–300 mm Foldable Aluminum Ruler — precise, portable, and built for everyday use Key benefits Accurate measurements: Clear, precise engravings deliver reliable readings across the full 0–300 mm range for layout, checking, and inspection tasks. Quick 90° layout: Folds into an L-shaped (90°) configuration to square edges and mark right angles without carrying a separate try square. Durable and rust resistant: Made of aluminum alloy to withstand daily use in engineering, workshop, and classroom environments. Compact and portable: Collapses to a small footprint that fits comfortably in a bag or toolbox, ideal for professionals and students on the go. Versatile: Works for measuring, marking, squaring, and simple dimensional checks in metalworking, woodworking, model making, drafting, and education. Features at a glance Range: 0–300 mm (0–30 cm) with high-contrast, easy-to-read graduations. Foldable design: Converts quickly between straight ruler and 90° L-shape to match the task. Material: Lightweight, corrosion-resistant aluminum alloy for long-term use. Use environments: Designed for engineering, learning environments, workshops, and fieldwork. How this ruler solves common problems Eliminates the need to carry both a straight ruler and a separate square by providing both functions in one compact tool. Provides clear, precise markings to reduce rework caused by measurement errors. Resists rust and wear so measurements remain reliable after repeated use or exposure to workshop conditions. Folds down for easy storage and transport, avoiding clutter in toolboxes and backpacks. Practical use scenarios On-site engineering or maintenance: Quickly measure components and verify right-angle faces when space or time is limited. The foldable L-shape helps you square brackets, flanges, and panels without extra tools. Student labs and drafting classes: Compact size and durable construction make it suitable for classroom use where students need a reliable measuring and squaring tool that travels between home and school. Hobbyists and makers: Model builders and woodworkers can measure, mark, and square small parts accurately while keeping tools portable and easy to store. What to expect A 0–300 mm ruler with precise engravings, a foldable L-shaped (90°) function, aluminum alloy construction, and a compact form factor suitable for everyday use in engineering, education, and workshop settings.