Features: Crafted from wood, this large wood compass offers three interchangeable tips for versatile drawing on multiple surfaces, perfect for math teaching tools and precise geometry tasks. Features adjustable mechanism that accommodates pencil, chalk or writing tool up to 2cm in diameter, it ensures accurately measurements for classroom whiteboards or chalkboard diagrams. Suitable for educators, students, and professional requiring professional drafting instruments for daily academic or creative project. Widely used for math teaching aid, classroom lectures, drafting project, or professional presentation where portable drawing tool with chalk/marker functionality. Combining light weight durability with wood construction, this compass withstands frequent use while maintaining precisely drawing result in educational and artistic environment. Specifications: Component: Wood Color: Wood Color Size1: Approx. 48.50cm/9.09in Size2: Approx. 52cm/20.47in Size3: Approx. 53.50cm/21.06in Weight: Approx. 193-214g Package Includes: 1Piece Large Wood Compass note: 1.Please allow 0-1cm error due to manual measurement. Be sure you donot mind before bid. 2.Due to difference between different monitors, the picture may not reflect the actual color