Pronunciation: [pˈe͡əɹ ɒv kˈʌmpəs] (IPA) 
The spelling of the word "pair of compass" can be traced back to its Latin origin "par de compassu". The word "pair" is pronounced as /pɛːr/, while "compass" is pronounced as /ˈkʌmpəs/. Together, the word is pronounced as /peər əv ˈkʌmpəs/, where the "r" sound in "pair" and the "v" sound in "of" merge in pronunciation. The word refers to a tool used in geometry to draw circles and arcs, with two arms joined at a hinge.
A pair of compass, also known as a compass, is a drawing instrument primarily used in geometry, drafting, and technical drawing to create accurate circles and arcs. It consists of two metal legs joined at a pivot point, allowing them to open and close like a pair of scissors. One leg is a needle-pointed tip, while the other leg holds a replaceable pencil or pen. The pivot point, known as the fulcrum, helps to maintain a consistent distance between the needle and the pencil/pen, ensuring precision in creating circles or arcs.
To use a pair of compasses, the needle is placed at the desired center point, and the other leg is rotated to draw a perfect circle or arc of the required radius. The legs can be adjusted to different lengths to create circles of various sizes. The needle point remains fixed, keeping the compass stable while the drawing is made.
Pair of compasses are commonly used in various fields such as mathematics, engineering, architecture, and art. They are essential tools for accurately constructing geometric shapes, dividing lines and angles, and transferring dimensions from one place to another. Their ability to create precise circles and arcs aids in the visual representation of three-dimensional objects and helps in the creation of detailed technical drawings. With their versatility and accuracy, pair of compasses play a significant role in facilitating the creation of intricate and symmetrical designs.
