When I was researching robotics simulation I came across inertia tensors. Basically the way a rigid body rotates can be described by a simple mathematical 3x3 a

When I was researching robotics simulation I came across inertia tensors. Basically the way a rigid body rotates can be described by a simple mathematical 3x3 array that describes the mass distribution within the object. These designs are interesting, but despite the weird bulbs or internal fins, the values of the inertia tensors could be compared objectively if they were available. I wonder if there is an untapped market for both testing of existing balls and construction of new balls with precisely controlled inertia tensors. Eg. "Build me a ball just like this one, but with 3% more inertia around the z axis"