A drawing bow is a versatile tool used for creating even and consistent curves in various types of drawings or designs on different materials like paper or wood. It typically consists of two arms connected by an adjustable string with tension screws at each end. To use a drawing bow, start by adjusting the tension screws until both ends are securely attached to the surface you are working on (e.g., paper). Then, adjust the central string length according to how wide or narrow you want your curve to be - a shorter string creates tighter curves while a longer one yields gentler ones. By holding one arm steady while pulling outwards on the other, you can accurately create arcs and curves for precise drafting or artistic purposes. It is important to ensure that the tool is stable and tight to prevent any slipping while drawing.