1. A Convenient Compass Geometry Set Includes 1 compass, 1 pen, 2 triangles, 1 ruler, 1 protractor, eraser, pencil lead refill, and a shatterproof storage box. 2. Easy to Carry Store Math kit for geometry with a plastic sleeve for protection and storing tools in one place in a backpack or desk. Easy to carry and store ruler set for school, office, home, or work. 3. A Convenient Tool for Multiple Functions Heavyduty metal compasses will not bend or break during use. The ergonomically shaped compass head sits comfortably in the hand. The compass with a universal holder works with any standardsize pencil or ballpoint pen. Rulers, triangles, and protractors feature graduations for easy identification. 4. A GOOD CHOICE FOR TEACHERS AND STUDENTS This tool set is for students, teachers, math experts, architects, engineers, artists, and designers at any level. It is also a gift for your children and friends. It is easy to take along for lessons and store in the classroom. Just choose it as a gift for school time or as a Christmas gift.