Features: Application: Perfect for teaching a class when using a whiteboard or chalkboard. Size: Legs measure 18 inches long and can hold markers or chalk with ease. Material: Made from durable which allows it to handle numerous drops and years of use in the class setting. With Suction Pad: The suction pad within the joint helps to lock the dividers in place to ensure accuracy while drawing. Suitable For: Made for mathematical geometry and art drawing. Specifications: Type: Teaching Compass Material: Color: Red Size(L*W): About 455x75mm/17.91x2.95inch Package Included: 1pc x Teaching Compass