<HTML><HTML>Greetings,              I t= ake the fork in my right hand and strike it on my heel. While it is vibratin= g, I place the stem of the fork underneath the piano keybed. It resonates ve= ry well and you can hear it. Then, I strike the A and listen to see how far = off the A is. Then I strike the F below the A and listen to the fork A along= with the F. I count those beats. Then I remove the fork and play the F and = the A and count those beats.            The fork and th= e A's beating should match the F and the A's beating, If it doesn't then adj= ust the A.  It doesn't matter if the F is not tuned yet, you're just us= ing the F only as a constant at this point. You're using the F to compare th= e fork A  to the piano's A, and then make the beating of the fork and A= match the beating of the F and A by adjusting the A.  Julia Gottchall. Reading, PA </HTML>