The oud is a traditional musical instrument, classified as a stringed instrument. It is made of wood, strung by five strings, and is used to play individual or group songs using what is known as the pentatonic scale.
The device consists of two wooden spur gears connected at right angles. They transmit the rotational movement from a tow animal to a vertical wheel with pails attached to a rope around its outer rim. Water is scooped from the bottom of a reservoir to the surface where it is emptied in the field when the pale is inverted.