Architectural Scale Ruler,Laser Etched Aluminum Architect Triangular Ruler 12" Metal Scale Rulers for Architects Engineer Students Draftsman Black

Features: 1, Supreme Accuracy: The ruler measures 30cm in length and features 3 concave sides with 6 of the most commonly used scales: 1:20, 1:25, 1:50, 1:75, 1:100, 1:125. White-on-black design makes it very clear to read. 2, Laser Etched Markings: The scale ruler is precisely marked, making your drafts, designs, blueprint more accurate. The markings never fade 3, Durable & Reliable: Solid High-Grade Aluminium to reduce flex and warping 4, Application: Suitable for architects, engineers, draftsmen, builders, roofers, teachers and students, etc.   Specifications: Triangular Scale Ruler(Six Scales): 1:20, 1:25, 1:50, 1:75, 1:100, 1:125 Color: Black Types of Technology: Laser Etched Material: Metal, Anodized Aluminum Alloy   Package contents: 1 x Triangular architect scale ruler