Easy to Use Determine the center circle and insert the pen into the end hole to draw a circle. The radius can be adjusted as needed to meet different drawing needs, saving time during layout and assembly. Compact and Portable Lightweight and compact circle and arch drawing tool for easy transport and storage. Whether you work in a workshop, classroom, or on-site, this tool can be transported and used wherever you need it. Durable and Ergonomic Made from corrosion resistant aluminum alloy with a CNC anodized red finish, this woodworking compass scriber is built to last. Its ergonomic design ensures comfortable and easy handling during use. Material and Construction Aluminum alloy construction provides durability and long life for everyday woodworking and drawing tasks. Applications Woodworking: mark circular cutouts, arcs, or layout lines on boards or panels. Education and Drafting: use in classrooms or workshops for geometry, circle drawing, and arch layouts. On-site Layouts: carry to job sites for quick circle and arc markings during installations or repairs.