caption: The image shows an open book with a drawing of a machine on it. The book is titled "Leonardo da Vinci's Lab Manual for the Invention of a Mechanical Device" and contains a detailed illustration of the machine. The drawing is composed of various components, including a cylinder, a handle, and a spout, all connected by a series of wires. The cylinder is connected to a motor, and the handle is used to control the speed of the device. The spout is used as a control panel, allowing the user to adjust the speed and direction of the movement.