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