Patent ID: 6983637

Claim:
A method for evaluating and comparing golf club heads based upon mass properties comprising the steps of creating a graphical model of a golf club head, determining the mass, three linear coordinates of the mass center location, and the six elements of the inertia tensor, determining the principal inertia values and principal inertia orientations from said six elements of the inertia tensor, configuring a solid ellipsoid such that it has the same said mass and same said principal inertia values as the golf club head, creating a graphical model of said solid ellipsoid, superimposing said graphical model of the solid ellipsoid over said graphical model of the golf club head such that the solid ellipsoid and the golf club head have coincident mass center locations and principal inertia orientations, generating multiple graphical views of said superimposed image, providing simultaneous graphical images of various golf club heads with respective superimposed solid ellipsoid so to compare the relative size, shape, and orientation of respective solid ellipsoids.