Ideal for Students - Perfectly useful for all levels whether for geometry class drafting architectural design construction or engineering. Plenty of Extras Includes an extra needle for dual use as compass and divider. Also comes with a universal adapter to hold pencils fine line markers cutting knives and other tools multifaceted use Conveniently Packaged - Comes in a hard see-through plastic case for portability and easy storage and transport. Stays in Place - Designed to create circles up to 12 inches in diameter with ease this compass performs consistently when you need it to. ALVIN has been the professional s choice for drafting tools and drawing supplies for over half a century. Since 1950 we have been known for our wide selection of high-quality products at a fair price. Our tools help bridge the gap between ideas and innovations. Proudly Made in Germany