Durable Triangular Design : Constructed from high quality heavy plastic, this Architectural Scale Ruler is built to withstand daily wear and tear, offering a reliable tool for professionals. Professional Quality : Suitable for a variety of applications including blueprints, floor plans, and scale drawings, this Engineer Scale Ruler delivers precision needed in engineering and architectural fields. Fully Divided Scales : Featuring scales fully divided by 10, 20, 30, 40, 50, 60 degrees, our scale ruler ensures accurate measurements for all your design projects. Versatile Application : Whether you're an architect, engineer, student, or hobbyist, this ruler is a must-have tool for your drafting toolkit. Easy-to-Read Scales : The clear and distinct markings make it easy to read and take precise measurements without eye strain. Crafted with precision and durability in mind, this Triangular Scale Ruler is your ultimate companion for engineering and architectural tasks. Designed to fit perfectly in your hand, its 30cm length offers versatility for various measurements. with fully divided scales and a durable construction, it's an investment that pays off in accuracy and reliability.