General description All-metal compass with nickel-plated components and a sturdy spring buckle, designed for durability and long-lasting use. This compass comes with 2 pencils and 2 erasers, making it a convenient tool for various drawing tasks. Technical specifications Material: Metal Maximum Diameter: 0.4cm to 24cm Usage This compass is ideal for a wide range of users including students, teachers, mathematicians, designers, artists, architects, engineers, metalworkers, leatherworkers, and carpenters for drawing and designing tasks. Other information Features a quick-adjust center drive wheel with an automatic locking mechanism for easy adjustments. Stable metal design ensures precise drawings. Includes sufficient spare parts for extended use.