Drawing Compass Set With Lead Core And Eraser Maths Protractor Set Metal Maths Geometry Set Stainless Steel Scribing Tools For Architects, Engineers Features: The Maths Compass has easy-to-grip top controls, makes it easy to change the size of the circle, and locks into position to give you circle you want. You can draw the perfect circle with the accurate Math Compass. MATERIAL DURABILITY: The compass is made of stainless steel; the protractor is made of safe plastic with a transparent design, easy to measure and read. The compass is approximately 12cm (4.72 inches) long. Protractor measures 0 to 180 degrees from left to right and right to left. The tool for plotting circles. The Drawing Compass Specialised Maths Kit is the circle drawing tool for students, artists, mathematicians, carpenters. Great for use in school, woodworking or at home. Product Description: Pack contains: 1* metal compass, 1* box of lead cores, 1* eraser, 1* transparent box. Features: The Maths Compass has easy-to-grip top controls, makes it easy to change the size of the circle, and locks into position to give you circle you want. You can draw the perfect circle with the accurate Math Compass. MATERIAL DURABILITY: The compass is made of stainless steel; the protractor is made of safe plastic with a transparent design, easy to measure and read. The compass is approximately 12cm (4.72 inches) long. Protractor measures 0 to 180 degrees from left to right and right to left. The tool for plotting circles. The Drawing Compass Specialised Maths Kit is the circle drawing tool for students, artists, mathematicians, carpenters. Great for use in school, woodworking or at home.