Gauges are instruments used to measure and display various physical quantities, such as pressure, temperature, or fluid levels. They provide important information in many fields, including engineering, automotive, and meteorology. Common types of gauges include pressure gauges, thermometers, and fuel gauges. These devices can be analog or digital, with analog gauges using a dial and needle to indicate measurements, while digital gauges display readings on a screen. Gauges are essential for monitoring systems, ensuring safety, and maintaining efficiency in various applications, from industrial machinery to household appliances.