The fourth component of the rain gauge is the graduated measuring stick with distinct white markings. It can hold a maximum of 20 inches of liquid. The measuring tube is housed in the overflow can, which catches all the water that overflows from the measuring tube. The tube is either a plastic or brass tube. From there, the water flows directly into the measuring tube. The collector funnel catches the rain and is 8 inches in diameter. The United States National Weather Service uses the 8 inch Standard Rain Gauge. The United States (NWS) and United Kingdom (Met Office) use two different methods for measuring rainfall in a graduated cylinder rain gauge: National Weather Service 8 Inch Standard Rain Gauge (United States) (Remote weather stations use automated rain gauges that empty themselves, which you will learn about shortly.) This rain gauge has to be measured and emptied on a daily basis, which means it can only be used in a manned weather station. The water gets collected by a cylindrical funnel, from where it flows directly into the graduated cylinder or captured by a container and then poured into a measured cylinder. It is used by all professional weather services in manned stations and is the most accurate way of directly measuring rainfall. Graduated Cylinder Rain GaugeĪlso known as the standard rain gauge, the graduated cylinder rain gauge is a simple, measured glass cylinder.
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