JeoPoom Geometry Compass, Metal Precision Drawing Includes Lock Wheel and Extra Lead Refills, for Technical Accessories, Makes 24cm Circle(Black)

[Professional Tools]- These drafting compass set with spring bow head and center adjustment wheel with automatic locking mechanism can prevents unintentional leg movements, professional makes drawing easy and fun. [High Quality]- The compass is made of sturdy metal, the center drive shaft is stable and not as easy to break as a plastic compass, so it can be used for a long time. [Adjustment Wheel and Locking Mechanism]- Easy to use, prevent the unintentional leg movements. Not slipping from your hand. Draw up a perfect circles by this compass. [Wide Applications]- Perfect for students, teachers, artists, architects, mathematician, engineers, woodworking and carpenter. [Lightweight and Portable]- Everything is well packed in a reusable transparent pouch, which is easy to carry and store.