There are three main types of rain guages: a standard rain guage, a tipping bucket rain guage, and a weighing guage. A standard rain guage catches rainfall through a funnel and collects it in a tube. The tube magnifies the rain 10 times, so precise measurement down to one-hundreth of an inch can taken. A tipping rain guage catches rainfall in a funnel, but it leads the water into one of two buckets. The first bucket fills at one-hundreth of an inchand ‘tips’ the rain guage, and this shift is electronically registered. The weighing guage is most accurate because it uses a vacuum effect that takes wind into account. More rain enters as a weighing mechanism at the bottom of the guage measures depth and time. This too is electronically recorded.
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