caption: The image shows a drawing of a machine with a wheel on it, which appears to be a pulley. The wheel is composed of several spokes radiating out from the center, and the spokes are connected to a central hub. The spokes are arranged in a circular pattern, with the center of the wheel being the largest and the edges of the spokes being the smallest. The machine itself is a large, cylindrical wheel with a handle on one side and a spindle on the other.