axis138Before calculating the heart axis, we must understand that each lead represents a different point of view of the same electrical stimulus.. To calculate the cardiac axis we will only use the limbs leads. Taking the exampleAXIS P5655-E offers superb image quality in HDTV 1080p with 32x optical zoom. It’s got Forensic WDR for clarity even when there’s both dark and lht areas in the scene. And Lhtfinder