Hydraulic press is a machine based on Pascal's law. Multiplies the pressure force according to the principle of the change in pressure at any point in an enclosed fluid. This mechanism is widely used, for example in metal forming process. In this process it is applied for bending, pressing, leveling, extending, moulding and riveting. Depending on the model it has various pressing force, for industrial manufacturing of sheets calculated in tonnes. More advanced and complex machines can also machine materials other than sheets, such as rods, flat bars and other sections. By complex it is meant that these machines can be mounted with appropriate tools, included as default equipment or accordingly customised, for specific tasks. Mounting these tools is simple, done in the press tool with a thread – required elements are screwed into the machine. Presses can be, for example, computer controlled or through a pedal.