The ruler for geometry is made of material, and allows for a view of numbers on the page; With the acrylic mathematics ruler, you can measure an object easily. A perfect present for your friends, easy to take to class and to store in the classroom and . Just choose it as a season present or a Christmas present. Features -Color:Multi -Material:Acrylic -Size:15.00X1.00X1.00cm/5.89X0.39X0.39in -Size:20.00X1.00X1.00cm/7.86X0.39X0.39in -Size:30.00X1.00X1.00cm/11.79X0.39X0.39in -A good Geometry 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 daily use. -With clear scale number, ensure the accuracy, excellent and useful drawing tool you. -It helps you to improve working efficiency and save time with drawing and measurement projects. Package list: 3 x Rulers