This aluminum adjustable triangle from Alvin is a must-have for any artist or designer. With a 12 inch length and inking edge, it's perfect for precise drawing and drafting. The Tru-Angle feature ensures accurate angles every time, while the brand's reputation for quality speaks for itself. This model, the 12 Inches Protector, offers added durability and protection for long-lasting use. Ideal for a variety of drawing and lettering supplies, this triangle is suitable for both professional and hobbyist use. Its versatile design and sturdy construction make it a reliable tool for any project. Upgrade your drawing supplies with the ALVIN 120C Tru-Angle adjustable triangle.