Leinuosen 6 Pieces Triangular Scale Ruler Set, Aluminum Architect Ruler 2 Pieces 12 Inch Scale Ruler with 4 Pieces Triangle Ruler Square Set for Students, Draftsman and Engineers, Metric (Silver)

Material: the scale ruler set is made from pure aluminum mixed with other elements to create a high-strength alloy, and the triangular ruler is durable, lightweight and reliable
Target customer: with reliable construction and accurate performance, the silver construction ruler is appropriate for architects, engineers, draftsmen and students
Relative advantage: aside from the laser-etched markings that won't rub off or fade, the ruler itself is made of solid anodized aluminum, unlike flimsy alternatives that contain plastic
High contrast: black-on-silver design makes each line and number significantly easier to read, ultimately preventing unnecessary eye strain
Package includes: 6 pieces in total, which contains 2 packs 12 inch aluminum triangular architect scale rulers and 4 pieces aluminum triangle ruler square set