The typical sundial is a relatively simple device, but each of its parts has been given a specific name. The component that makes the shadow is known as the gnomon. The edge of the shadow along which to time is actually read is made by the style (usually the top edge of the gnomon). It is important to orient the style so that it points to the celestial pole and is parallel to the Earth’s rotational axis. The dial face or dial plate is the surface that receives the shadow cast by the sun from the gnomon. It will have hour lines and sometimes additional information such as lines for the tropics, the horizon, and the equator. These lines are known as the dial furniture. Some sundials have artistic renderings, or designs on their faces, and often there may be an epigram, poem, or saying concerning the passing of time, or the beauty of a garden which are referred to as sundial mottoes. To enjoy the beauty and functionality of your sundial, you do not need to know that it has a gnomon or that the words inscribed on its face are called the motto, but knowing these terms will increase your appreciation of the simple, yet ingenious designs of the sundial.
Tags: brass sundial, garden sundial, bronze sundial, sundial clock, bronze sundials, gnomen
