caption: The image shows a drawing of a machine with a gearbox, which is a type of gearbox used to control the flow of liquids or gases. It has a cylindrical shape with a handle on the side and a spindle at the top. The gearbox is connected to a motor and has several components labeled with numbers and letters. The drawing also shows the various components of the gearbox such as the pistons, valves, and other components.