Abstract: A smooth surfaced, inelastic, flexible, S-shaped or L-shaped belt-like strip for recording electrocardiograms having a series of separate precordial electrical contacts and laterally placed separate, independently movable precordial leads and electrodes movable laterally insuring proper placement on the patient's chest or precordium during usage. The S- and/or L-shape of the strip helps cover proper recording areas. Raised, fixed, compressible precordial electrodes maintain contact with each patient's chest allowing for variations in chest size among patients. The apparatus is attached to the chest with an adjustable elastic strap providing a constant and evenly distributed downward force holding it and the precordial leads in place. Lead wires exit the lateral sides of the precordial belt-like strip towards electrodes placed on each arm.

Abstract: A smooth surfaced, inelastic, flexible, belt-like strip for recording electrocardiograms having a series of six separate precordial electrodes, three fixed and three being independently movable leads with electrodes and movable within a fixed range insuring proper placement on the patient's chest or precordium during usage, the S-shape of the belt-like strip enables it to cover the proper recording areas. The fixed, electrodes, which are raised and compressible, maintain contact with patients' chests despite variations in chest size among patients. The apparatus is attached around the chest with an adjustable elastic strap providing a constant and evenly distributed downward force holding it and the precordial contacts, which are between the strip and patient's chest, in place. Internal lead wires attach at the sides of the precordial belt-like strip with electrodes placed on each arm via external lead wires.