The protractor for geometry is made of plastic material, and translucent color allows for a clear view of numbers and letters on the page; With the clear mathematics ruler, you can measure an object easily. A perfect 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:Black -Material:Plastic, Metal -Size(Box):16.70X6.80X2.70cm/6.56X2.67X1.06in -Size(Ruler):16.00X2.50X0.20cm/6.29X0.98X0.08in -Size(Compass):12.20X2.20X0.90cm/4.79X0.86X0.35in -It can be used in school, office, home or at work, anywhere and whenever you need to use it. -Fine craftsmanship and ensure that it won't fade or rub off during use. -Suitable for art design, score measurement, building templates, architecture, network technology, and drawing. -Ergonomically designed anti-skid compass head makes it hold comfortably. -You can easily buy this set of practical Math Geometry Kits at an . Package list: 1 x Compass 1 x 15 cm Ruler 1 x Protractor 2 x Triangle Rulers 1 x The Eraser 1 x Pencil Refill 1 x Pencil