A rain gauge is a simple instrument used to measure the amount of rainfall over a specific period. It typically consists of a cylindrical container that collects rainwater, allowing users to see how much precipitation has fallen. Rain gauges can be made from various materials, including plastic and glass, and often have measurement markings on the side for easy reading. There are different types of rain gauges, such as the tipping bucket gauge and the standard rain gauge. The tipping bucket gauge records rainfall automatically, while the standard rain gauge requires manual measurement. Both types are essential tools for meteorologists and gardeners alike, helping them understand weather patterns and manage water resources effectively.