Perfect for architects, engineers, students, and enthusiasts requiring measurement tools for technical drawings or school projects This stainless steel ruler contains 3 rulers in different sizes: 15cm(5.91in), 20cm(7.87in),30cm(11.81in Rulers are perfect for use in schools, offices and Both sides are clearly marked, which ensures comfort and accuracy Suitable for carpenters, engineers and architects, for drawing straight, Manufacturer: REITINGE