. For High School wrestling programs only BodyMetrixTM is an easy to use, non-invasive and affordable body composition device that is scientifically validated and more accurate than calipers or bioelectrical impedance.This patented ultrasound technology is poised to revolutionize body composition analysis. Unique - patented ultrasound technology. Accurate - measuring total body composition as well as fat or muscle thickness on specific areas. Non-Invasive and fast - does not require embarrassing and uncomfortable pinching of tissue. Affordable - a fraction of the cost for equally accurate techinques.