a mechanical device a triangular shape a pendulum that swings back and forth a lever or knob to adjust the pendulum speed a numbered dial to adjust the tempo a wind-up key to power the metronome
metronome which is a mechanical device metronome which is a triangular shape metronome which is a pendulum that swings back and forth metronome which is a lever or knob to adjust the pendulum speed metronome which is a numbered dial to adjust the tempo metronome which is a wind-up key to power the metronome