A leveller machine is a piece of industrial equipment that is used to straighten and level metal sheets or plates. It is commonly used in the manufacturing industry, particularly in the production of metal products such as automobiles, appliances, and construction materials. Leveller machines are typically large, heavy-duty pieces of equipment that use a series of rollers and blades to flatten and smooth out metal sheets. They are essential for ensuring that metal products are of uniform thickness, flatness, and smoothness, which is critical for their performance and appearance.