Sprague Rappaport-Type Stethoscope eliminates the need for different stethoscopes for infants, children, and adults. The solid chest piece drum has two interchangeable diaphragms and three open bells for accurate detection of high-, middle- and low-frequency sounds. Allows for use on patients of all ages and is made for professionals and students. The ear tubes are flexible and adjust for comfort. The solidly constructed chest piece allows for superior contact to provide accurate readings and evaluations. With this dual head model the diaphragm is used for high frequencies and the bell is used for low frequencies.