Do you want a professional straightedge, triangle ruler, and protractor? Our drawing geometry math measurement ruler set is thoughtfully designed for your needs. Suitable for use at home, in the office, and by students and teachers. Features - Color: Golden - Material: Brass - Size: 10.10 x 5.70 x 0.15 cm / 3.97 x 2.24 x 0.06 inch (protractor) 14.00 x 6.20 x 0.15 cm / 5.51 x 2.44 x 0.06 inch (triangle ruler) 13.00 x 3.00 x 0.10 cm / 5.11 x 1.18 x 0.04 inch (straightedge) - Made of brass material, durable and suitable for measuring tasks - Ideal for architecture, professional applications, painting, drafting, technical illustration, and measurement - Clear markings for easy reading, enabling quick and accurate results - Lightweight and portable, convenient to carry anywhere - Simple design, easy to use, with a strong and smooth surface for reliable performance Package list: 1 x straightedge 1 x triangle ruler 1 x protractor