A metronome is a tool used in musical performance to stabilize rhythm. It features a mahogany-grained casing with a decorative logo on the front. Structure: The classic pyramid-shaped casing houses the core components such as the pendulum and scale, representing the standard design of a traditional metronome. Origin: The modern metronome was standardized by German inventor Johann Nepomuk Maelzel in the early 19th century and remains a fundamental tool for learning and playing musical instruments.