I'm not sure, perhaps it is... RAIN.
A Rain Guage
gague
a rain gage would measure the amount of rain that had rained .so if the rain gage shows 1 mark that means one inch of rain had fallen
They are measured by a rain gauge.
Rain Guage
A device to measure the amount of rain that falls.
14g
a rain gawge
The instrument used to measure the amount of rain that has fallen is called a rain gauge. It collects and measures the precipitation that accumulates over a specific period of time.
litmus paper
A rain measure
To measure rain, you can use a rain gauge, which collects and measures the amount of precipitation that falls over a specific period of time. Rain gauges can come in various designs, such as a simple cylindrical container or a more sophisticated digital device, but they all serve the purpose of quantifying rainfall.