PACKAGE INCLUDED: You will get a stationery set including 1 school compass, 2 set squares, 1 protractor, 1 ruler to meet a wide range of drawing and measuring requirements ASER-ENGRAVED PRECISION: This aluminum alloy ruler set uses high-definition laser engraved markings for unparalleled accuracy and durability, allowing you to get accurate readings when measuring objects and drawing drawings, improving readability and clarity COMPASS EASY TO DRAW CIRCLES: The precision drawing compass has a spring chuck and a center wheel. By turning the center wheel, you can adjust the diameter of the circle, making drawing circles easy and fun. In addition, the grooved compass head ensures a firm, non-slip grip that is not easy to slip off HIGH-QUALITY MATERIAL: The black ruler set is made of high-quality aluminum alloy, which is sturdy and durable, not easy to wear and rust, and the scale is clear and bright, easy to read and measure, and it is your best drawing and measuring assistant WIDELY USED: The geometry set is designed to help you draw and measure lines, angles, circles, etc. It is a must-have tool for students and teachers to draw diagrams and learn mathematics. It is perfect for students, teachers, artists, architects, mathematicians, engineers, woodworkers and carpenters for drawing and drafting projects Specification:Item Type: Geometry Tool SetMaterial：Aluminum AlloyColor: Black/SilverSize: As shown in the figureQuantity: 5 pieces Package Includes:1 x compass1 x protractor1 x ruler2 x set squares Feature:  1.The math set is durable and not easy to wear and break, and the scale is clear and bright, easy to read and measure, ensuring accurate data. 2.The geometry tools are packed in a transparent box, easy to carry and store, you can store it in any backpack or somewhere on your desk. 3.The geometric compass has a center wheel adjustment function. By rolling the center wheel, the diameter of the circle can be finely adjusted, making drawing easy and fun. Warming Tip: 1.The size is measured manually, there may be slight differences from the actual size, please understand. 2.Actual color may slightly vary from the picture owing to lighting effects or the different screen of display. 3.If you have any questions about the product, please contact us in time and we will solve it within 24 hours.