A rain gauge is an instrument used by meteorologists and hydrologists to gather and measure the amount of liquid precipitation over an area in a predefined area, over a period of time. It is used for determining the depth of precipitation that occurs over a unit area and thus measuring rainfall amount.

What is Pluviometer?

pluviometer. [ plōō′vē-ŏm′ĭ-tər ] An instrument for measuring the amount of precipitation at a given location over a specified period of time. Also called udometer.

What is the real meaning of rain gauge?

A rain gauge is a meteorological instrument to measure the precipitating rain in a given amount of time per unit area. The instrument consists of a collection container which is placed in an open area.