メートルスケール: 0–500mm (cm/mm) – for engineering, drafting, and general measurement
インペリアルスケール: 0–20 inches – for international compatibility and traditional applications High-contrast laser or electro-printed markings – clear, wear-resistant, and easy to read.
✅マルチシーンの多用途性
教えること(教師の支配者/規律の支配者) – Ideal for blackboard demonstrations or as a traditional “warning ruler” in classroom settings
仕立て – Straight, accurate cuts for garment making and quilting
描画 – Precision straightedge for blueprints, sketches, and technical drawings
車両安全ツール – Thick and strong; can be kept in the car as an emergency window breaker or self-defense tool
DIY – Metal cutting guide, paper trimming, craft sizing, and general household tasks