Leveling mounts are devices that utilize the effect of a special built-in screw to adjust the height of tables for equipment or machines. These are used for devices in many different situations, such as machine tools and food machinery. Also available are lifting units that move loads up and down, and aluminum carts used for transporting loads. Lifting units are often manual types that are easy to use, and their load capacity varies, with some designed for medium loads or light loads.