A gauge is a device used to make measurements or to display certain information. A wide variety of tools exist which serve such functions, ranging from simple pieces of material against which sizes can be measured to complex pieces of machinery. There are 2 gauge types provided by AnyChart: Linear Gauge and Circular Gauge. A Linear Gauge is used to visualize measuring devices, such as thermometers, battery indicators, rulers, and so on. It usually has a scale with different color ranges and a pointer. A Circular Gauge is a gauge with a radial scale and a pointer, that shows the exact value. It can be used as a clock, speedometer, compass, ammeter, voltmeter etc.