The Mr. Pen Protractor and Compass Set is an essential tool for anyone who values precision in their work. Ideal for artists, mathematicians, and draftsmen, this set features a high-quality compass that allows users to create perfect circles up to 7 inches in diameter. With its spring bow head and center wheel, the compass prevents unintended movements of the legs, making it easy to achieve accurate and detailed drawings. The all-metal design with nickel plating ensures durability and longevity, providing consistent performance for years to come. This professional-grade tool not only enhances the quality of your work but also offers the reliability needed for various projects, making it a must-have for anyone dedicated to their craft.