Helix Maped 30cm Multi-Scale Ruler – Color-Coded Metric Engineering Scale

The Helix (Maped Helix) 30cm / 300mm Multi-Scale Ruler is a professional-quality measuring tool designed for engineering, drafting, architecture, and technical drawing. Made from durable high-impact plastic or aluminum, it features multiple color-coded metric scales, commonly including 1:1, 1:100, 1:200, 1:2500, 1:500, 1:1000 (may vary by model). Ideal for precise measurements, accurate scaling, and clean technical work in school, office, or field use.