Package Includes: you will receive 1 piece of geometry compass, 1 piece of box for refills, 1 piece of clear case for the compass and refill, and 1 piece of 180 degree protractor for drawing, suitable for students, teachers, engineers, designers, artists, etc
Size information: the length of a drafting compass is 4.5 inch, the length of the box is 5.5 inch, and the width is 1 inch; The diameter of the protractor for school is 6 inches; They are lightweight and easy to carry
Strong Material: the math compass for geometry adopts nice technology, the gears of each component are tightly meshed and not easy to loosen, the metal pointed corners of the compass are obtuse and not easy to scratch, and the head of the compass is finely textured, which is easy to hold; The digit protractor is made of ABS plastic material, which has nice toughness and is not easy to break
Convenient to use: this math protractor is thick enough, thus they are not easy to snap; Range of 0 to 180 degrees, and bright color allow you to see the words, letters, figures on page through the protractor, convenient for your kids to use
Measure math tool:: compass and protractor set are the good match, nice for drawing any angle arc and circle and measuring angle, and suitable for homework, technical drawing, painting, engineers, designers, artists, etc