A stethoscope is a medical instrument for listening to the action of someone's heart or breathing.
A small disk-shaped resonator that is placed against the chest and two tubes connected to earpieces.
It is the most frequently used type of stethoscope and it uses a phenomenon that transmits sound from the air-filled hollow tubes of chest piece to the auscultator's ears.
The acoustic stethoscope is a two-sided stethoscope.
