6 Pcs Triangular Ruler Set 12 Inch Engineering Scale Aluminum Architect Drafting Ruler Metal Protractor Arquitectura Accessories for Students Draftsman Engineers Metric(Black)

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Package includes: 6 pieces in total, which contains 2 12 inches/ 30 cm aluminum triangular rulers, 1 30/ 60 degree triangular ruler, 1 45/ 90 degree triangular ruler, 1 protractor, 1 5.9 inches/ 15 cm ruler 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 Relative advantage: 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: white-on-black design makes each line and number significantly easier to read, ultimately preventing unnecessary eye strain Target customer: with reliable construction and accurate performance, the black construction ruler is appropriate for architects, engineers, draftsmen and students