OCM Metric Triangular Engineer Scale Ruler (Proffessional Grade Solid Aluminum) 30 Centimeters Metric Engineering Architectural Mechanical Drafting Ruler - 1:20, 1:25, 1:50 1:75, 1:100, 1:125
Professional Quality SOLID ALUMINUM Metric (NOT IMPERIAL) Scale Ruler with Triangular Concave Body for Safer Cutting and Reduced Pencil Smears. Features Easy to Read Printed Gradations on all Three Sides. A must have tool for Architects, Engineerings, Mechanical Drafting, Technical Illustrators, Designers, Artists, Builders.