Description If you are an architectural designer, then you must not miss our architectural scale ruler. Made of aluminum alloy material, it is high-quality and durable. Easy to operate and use, it is suitable for professional and personal use. Feature - Material: Aluminum alloy. - Size: Approx. 32.50X2.50X2.00cm/12.77X0.98X0.79in. - The aluminum alloy ruler is solid and durable, which is not easy to rust and deform. - It has no flex or wrapping, which lies perfectly flat on the drawing surface. - Suitable for professional applications, architecture, civil engineering, drafting and technical illustration. - 3-sided triangle scale ruler, the concave base reduces smearing when drawing. - Easy to use, accurate measurement, numbers are clear and easy to identify. The aluminum alloy ruler is solid and durable, which is not easy to rust and deform |It has no flex or wrapping, which lies perfectly flat on the drawing surface |Suitable for professional applications, architecture, civil engineering, drafting and technical illustration |3-sided triangle scale ruler, the concave base reduces smearing when drawing |Easy to use, accurate measurement, numbers are clear and easy to identify