Thanks. I think that make sense. So for example, on the fitting chart, if I were to go from A1 to A4, I'm closing the face 1.5 degrees with the tool. So then, if were to take the club and square it up with my hands by rolling the face open a little, that's equating to a loft change of +1.5. But this only applies when actually rolling the face one way or the other after adjustment, correct? If I have an 8.5° driver and I adjust it from A1 to A4, it's closing the face 1.5 degrees. If I then don't re-open the face and square it back up, then it's still 8.5°. Only when I roll the face a little to square it will it have the additional 1.5° of loft?
Yep you got it. The tool allows you to make face angle (same as lie angle) adjustments without changing the loft. With your hands you also change loft whenever you change the face angle.
So if you make an adjustment with the tool, and then counter that adjustment by rolling the face open or shut a little to square it you end up making the opposite loft change to what you'd otherwise expect when talking about opening or closing the face.