[Precise Geometry Compass] - Quick adjustment of the compass feet and fine adjustment with a central drive wheel. Interchangeable lead and needle insert. The spring-loaded bow head and the central wheel prevent unintentional leg movements. [High-quality metal compass] - These compass sets are made of sturdy metal, stable central drive shaft, more durable than plastic compasses. They can be used for a long time. [Chic design] - The lead and needle rods can be folded. Our compasses are particularly stable and offer you an optimal basis for precise drawings at school and at work. Meet your different needs. [Wide application] - This is suitable for children and adults, ideal for school, woodworking, workshop or home. It is the best circular drawing tool for students, artists, mathematicians, etc. [Easy to carry] - The drawing compass is placed in a transparent bag. Easy to identify, store and carry. The length of the compass is 15cm. Note: The data are all measured manually. Please allow an error of 1-3 cm. Due to the difference between light and display, there is a certain color difference, which is subject to the actual object received.