Abstract: A flexible multiple electrode EKG device is disclosed for hooking a patient to an electrocardiograph instrument, which is capable of being used with a variety of different sized patients. The assembly comprise a pad having sufficient weight to ensure that the pad will conform closely to the outer surface of the patient's chest when in place. A plurality of sets of electrodes are embedded in the pad, with each set of electrodes corresponding to a particular body size. A switch is provided for selectively activating the appropriate set of electrodes, depending on the size of the patient, to ensure optimal positioning of the electrodes.