Ed Foote/Pythagorean Meantone question.

[A440A@AOL.COM]

Joe asks: 
<< If we use A440 as the

criteria for pitch, then it would follow that we would tune A220, then

proceed to tune the "Temperament" within that scope. If that is correct,

(and I'm asking if it is), then the example given was tuning A440 and then

went "UP" to A880. There lies my question. ???? Is it valid to set a

"Temperament" in that area of the piano? And why, etc., etc., etc. >>

     I know of no one that tunes between A4 and A5 for a temperament octave.  
The beat rates would be way too fast to compare, ie,  the A-C#, C#-F and F-A 
would be 9, 11 and 14 (approx), which I think would be hard to judge.  Even 
the min3/6 tests would be beating too fast to use.  
Regards, 
Ed Foote RPT