1Practical Tool: Scale on a ruler for easy and clear measurement, line detail and clear,ideal tool for manual cutting plate making. 2Easy to Use: They are transparent so you can see through the plastic to the fabric and make adjustments easily. Perfect for beginners and experienced users to make your own clothes. 3Great Gifts: This is a surprise gift for someone who begins with sewing and tailoring and who wants to try new tools or someone who is more involved with sewing. 4Application: Widely used for drawing, cutting, plate and other clothing design for students, designers, pattern maker and tailor, you can choose this ruler sets to DIY. 5Premium Material: The ruler is made of durable plastic material, which is clear, durable, high accuracy, good flexibility. It's easy for us to draw pictures on paper.