Do you want to have professional straightedge triangle ruler protractor? If so, our drawing math measurement ruler set is carefully prepared for you. Can be applied for home and office using, students and teachers using. You deserve to have it. Features - Color: Golden. - Material: Brass. - Size: 10.10X5.70X0.15cm/3.97X2.24X0.06inch (protractor); 14.00X6.20X0.15 cm/5.51X2.44X0.06 inch (triangle ruler); 13.00X3.00X0.10 cm/5.11X1.18X0.04 inch (straightedge). - Using brass material, and firm, suitable for measuring use. - Suitable for architecture, professional applications, painting, drafting, technical illustration, measurement, etc. - The numbers are clear, which are easy to identify, and then you can read quickly and with great accuracy. - Lightweight and portable, it is very convenient for you to carry with in everywhere you like. - Simple in structure, easy to use, strong and smooth surface, you can use it with confidence. Package list: 1 x straightedge 1 x triangle ruler 1 x protractor