The Alvin Academic Divider is ideal for a variety of scholastic and artistic applications, including drafting, drawing, architectural design, construction, geometry, and engineering. Constructed from durable metal, a matte nickel finish resists staining and tarnishing. A self-centering gearhead offers maximum precision and ease of use. Measuring 6" (15 cm), each divider comes with replaceable needle points. A hard, transparent plastic case allows for easy storage and transport.