Question

Name the instrument used to measure the rainfall at a place.

Answer 1

Rain gauge:

1. A rain gauge is a meteorological instrument to measure the precipitating rain in a given amount of time per unit area.
2. It can also be called an udometer or an ombrometer.
3. The instrument consists of a collection container that is placed in an open area.
4. These gauges work by collecting the falling rain in a funnel-shaped collector which is attached to a measuring tube.
5. The area of the collector is ten times that of the tube.
6. Thus, the rain gauge will work by magnifying the liquid by a factor of ten.
7. The standard rain gauge for the measurement of rainfall is the $203mm\left(8inch\right)$ rain gauge.
8. This is a circular funnel with a diameter of $203mm$ which collects the rain into a calibrated cylinder.
9. The measuring cylinder can record up to $25mm$ of precipitation.

Thus, the rain gauge is the instrument used to measure the rainfall at a place.