Is there any way to scientifically measure how heavy a piano action will feel or to compare two actions? IF what I understand is correct, a tech can measure the downweight and upweight using weights and those measurements do include friction. But since the mesurements don't include inertia, my understanding is that two pianos could have the same downweight measurements but feel very different. Is my analysis correct, and if so, is there any way except by subjective playing of the piano to measure how heavy a piano will feel