The term "ombrograph" is commonly used to refer to a rain gauge that measures the amount of precipitation in a given period. However, there are several synonyms of ombrograph, including pluviometer, pluviograph, and rain gauge. These terms are used interchangeably in the meteorological field and are essential tools for measuring rainfall. The data obtained from these devices are used for forecasting weather and for agricultural and environmental planning. Pluviometer, pluviograph, and rain gauge are all precise instruments for measuring rain, and they differ mainly in their design and functionality. Regardless of the specific device used, they all serve the same basic purpose of measuring and recording rainfall.