Dials are circular devices used to display information, often found on instruments like clocks, thermometers, and gauges. They typically feature a rotating pointer or hand that indicates a specific value on a marked scale, allowing users to easily read measurements such as time, temperature, or pressure. Dials can be analog or digital. Analog dials use mechanical components to show readings, while digital dials display numbers on a screen. Both types serve the same purpose of conveying information clearly, but they do so in different ways, catering to various preferences and applications in everyday life.