In our range of medical equipment, you can find stethoscope. This is one device that you will always find placing around the collar of a specialist at a clinic or hospital. This medical device is composed of a tube with a resonator at one end and two earpieces at the other end. A doctor put the earpieces in his ear and place the resonator against the skin to listen to sounds of heart and lungs. Physicians and healthcare providers can tell you if there is something abnormal about the heart sounds or here is blockage in the airways in lungs.