[Package Content]You receive 20 Pieces geometry compass set,the package includes 10 geometric compasses and 10 protractors for geometry, these quantities are enough to use and replace, you could also share them with other people, such as students, teachers, engineers, designers, artists and more [Nice Materials]the metal compass is made of quality metal materials and the protractor adopts nice plastic, which does not easily deform or break, the math compass for geometry adopts nice technology, so that the gears of each component are tightly meshed and not easy to loosen, you could use them for a long time [Size Information]the length of the drafting compass is about 5 inches and the diameter of the protractor for school is about 6 inches, they are and easy to carry, and they are suitable for most people to hold [Easy to Use]the clear protractor is easy to see the words, letters and figures on page, which is convenient to use, the range of 0 to 180 degrees meet your most needs [Measure and Draw Tools]the protractor compass set is necessary for math, art and more, you could use them to measure the angles, draw the angles and do other work as you want, providing you with a nice using experience Features:Convenient to carry:You could carry the protractor and compass for geometry in , which do not take up too much space and do not add burden . But be careful about the pointed risk to avoid hurt.Practical gifts:It is a to send the drawing tools for artists as gifts to your classmates, colleagues, family members and many other people, the large quantities meet math group needs, and they be happy when they receive such practical accessories. Colour:As Shown Material:Metal + Plastic Package Contents: 10 x geometric compasses 10 x pro Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.