High-Quality Compass Set: Easy to use, with no burrs inside the compass hole. An eraser removes errors from the drawing surface. Can draw circles of various sizes to meet different design needs. Compass Geometry Set: This complete math tool set includes a compass, ruler, set square, protractor, wooden pencil, mechanical pencil, eraser, and replacement leads, covering all the basic measurement and drawing tasks needed for everyday school math homework. Clear Markings for Precise Mathematical Measurements: The transparent plastic measuring tool features clear centimeter and degree markings, ensuring accurate readings and avoiding calculation errors in quizzes, math exams, and classroom geometry assignments. Smooth Grip Adjustable Compass: The ergonomic soft-grip compass with an adjustable screw allows for stable drawing of circles of various sizes; its lightweight design reduces hand fatigue during long periods of drawing and geometry practice. Lightweight Transparent Hard Plastic Storage Case: The transparent snap-lock storage case securely stores all tools to prevent loss; its slim and lightweight design easily fits into a backpack, making it ideal for daily commutes, tutoring, or after-school study.