A mechanical metronome is a device used by musicians to keep a steady tempo while practicing or performing. It produces a regular ticking sound at adjustable intervals, allowing musicians to maintain consistent timing. The tempo is usually measured in beats per minute (BPM), and the device can be set to various speeds to suit different pieces of music. Typically, a mechanical metronome consists of a pendulum that swings back and forth, creating the ticking sound. It is often made of wood or plastic and features a dial for setting the desired tempo. Many musicians, including composers like Ludwig van Beethoven, have used metronomes to enhance their timing skills.