The principle of measuring the scale is water when rain fall through support rain water and the rain water into the tank, the cone get weighed accumulated rain water will increasingly cause weight increase, which will press the plate scale that links shifts the spring mechanism of the borabop with the data recorder rain by the pen to save results. Down the graph paper is Colonel robotrong cylinder clockwise. Therefore, it is the rolled-up rain. This rain water gauge to check the quantity of water in the tank is always. To pour the water out. When there is water, there is virtually no rain drainage system from the tank.
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