This tester measures the hydrostatic pressure of products such as fabrics, textiles, leather, etc. There are two methods to test: high range hydrostatic pressure method(6kgf) and low range hydrostatic pressure method(1kgf). This tester was designed based on the low range hydrostatic pressure method. With a constant pressure, water is supplied from the bottom of the specimen. The pressure is measured and tested when certain water droplets are shown.