quartz metronome

Metronome that translates the electric signal produced by a piece of quartz into sound or visual signals.
quartz metronome 						Device that translates the metronome’s electric signal into beeps; its volume can be controlled.				  							Reference note established as the international standard; its frequency is 440 Hz (440 vibrations per second).				  							Part that translates the electronic beats of the metronome into flashing light.

sound signal

Device that translates the metronome’s electric signal into beeps; its volume can be controlled.

standard A

Reference note established as the international standard; its frequency is 440 Hz (440 vibrations per second).

light signal

Part that translates the electronic beats of the metronome into flashing light.