A medical instrument for listening to the action of someone's heart or breathing, with a small disk-shaped resonator that is placed against the chest, and two tubes connected to earpieces.
SIUE STEM Resource Center
http://www.siuestemcenter.org/
Southern Illinois University Edwardsvillehttp://www.siuestemcenter.org/
Science East, Room 1276
Edwardsville, IL, 62026
USA
618-650-3065