The contact angle meter is used to measure the wettability of liquids on solids. It calculates and determines indicators such as the liquid's adhesion to the solid, surface tension, and surface energy of the solid by measuring the contact angle. This instrument is widely used in petroleum, chemical, pharmaceutical, papermaking, and dye industries for scientific research and educational purposes. The machine uses imported components and employs microcontroller technology to transfer captured images to a computer for storage, analysis, and printing. It is fast, provides accurate data, and is easy to operate.