Unique design that combines the acoustic response of a traditional bell and diaphragm into a convenient one-sided chestpiece. Bell-type low frequency response is achieved by simply holding the chestpiece in place with light pressure. Firm pressure will produce diaphragm-type high frequency performance. A rubber gasket recessed into the chestpiece alters the diaphragm permitting the scope to achieve multi-frequency response. Chestpiece made from lightweight zinc alloy plated with an attractive satin finish. Non-chill diaphragm retaining rim for patient comfort. Lightweight aluminum binaurals with matching satin finish. Double leaf internal spring fixed at 15° angle for greater comfort. Reinforcing yoke molded into flexible 22" PVC Y tubing. ADSOF- Adscope-Lite, Black