What tool is used for drawing circles accurately?

A compass is specifically designed for drawing circles or arcs with precision. It consists of two arms: one holds a pointed end that is placed at the center of the circle, while the other arm has a pencil or writing instrument attached. By rotating the pencil around the fixed point, a perfect circle is drawn. This tool allows for accurate measurement of radius, making it essential in various mathematical and engineering applications where precision is paramount.

Rulers, protractors, and dividers each serve different purposes. A ruler is typically used for measuring straight lines or drawing straight edges, a protractor is designed for measuring angles, and dividers are mainly used for transferring measurements or for dividing distances. None of these tools are specifically adept at drawing circles, highlighting the unique function of a compass in this context.