Cylindrical rain gauges are buried under the ground or placed on it. Select a flat place as the observation field and install the gauge so that the receiver orifice is level. Once it is buried, plant grass around the gauge and keep it mowed to prevent raindrops from splashing into the receptacle from outside. For installation on the ground, use a firmly fixed support to prevent wind-related tilting. As a deformed receiver orifice or any leakage from the cylindrical vessel may cause