---------- is the instrument used in the measurement of rainfall

A "rainguage" is the instrument used in the measurement of rainfall. A rainguage, also known as a rain gauge, is a device that is used to measure the amount of precipitation, such as rain or snow, that has fallen in a specific location over a certain period of time. A rainguage typically consists of a container with a funnel that collects the precipitation and directs it into a measuring cylinder. The cylinder is marked with units of measurement, such as millimeters or inches, to indicate the amount of precipitation that has been collected. In simple terms, a rainguage is like a cup that you place outside to measure how much rain has fallen. By measuring the amount of precipitation, we can better understand the patterns and amounts of rainfall in different areas, which can have important implications for agriculture, water management, and other areas.