The protractor for is made of material, and allows for a view of numbers and letters on the page; With the plastic mathematics ruler, you can measure an object easily. A perfect gift for your kids and friends, easy to take to class and to store in the classroom and at home. Just choose it as a school season gift or a Christmas gift. Features -Color:Transparent -Material:Plastic -Size:16.00X3.20X0.10cm/6.29X1.26X0.04in -A good Set for teachers and students, which is a good helper when measuring something. -You will have good use experience because of the perfect workmanship of this product. -Compact size and light weight, portable for students to carry it for school use. -With plastic scale number, ensure the accuracy, excellent and useful drawing tool set for you. -It helps you to improve working efficiency and save time with drawing and measurement projects. Package list: 4 x Sets of Rulers