Well, simple manual would help i.e - what should be, what's wrong, what's right, what's the best, what's worse, and where I'm standing in all this with my headset and my hardware.
Other than that there is no understanding - 1 meter clear vision is good or bad, blur test - where shall be the best point in order to be clear with your adjustments, reading - the same thing - what's the best/optimal distance in order to be clear as possible in multiple environments etc.
Other than that I do not understand how this tool could help me tweak and twist my Headset correctly.