Used to determine the water repellency of fabrics or composites under different rainfall pressures. The instrument can simulate the sprayed rain from the horizontal direction to the fabric that is fixed vertically in the stainless steel groove. The back of the sample is attached to the standard water absorbent paper (weighing before and after the test). A certain height of water column is formed by spraying the standard nozzle, and the water column can be adjusted to 600mm (24 inches) by 300mm (12 inches) increment to 2400mm (96 inches).