Rain Gauge

A rain gauge (also known as an udometer or a pluviometer or an ombrometer or a cup) is a type of instrument used by meteorologists and hydrologists to gather and measure the amount of liquid precipitation over a set period of time.

Read more about Rain Gauge:  History, Principles, Types

Famous quotes containing the word rain:

    A single gentle rain makes the grass many shades greener. So our prospects brighten on the influx of better thoughts.
    Henry David Thoreau (1817–1862)