FAC Averaging

[ROGERIO CUNHA]

I have some experience on this. I work in some rooms with two pianos and the
best I could to do with my SAT II was to measure the FAC to each piano,
compare in order to see if in both pianos the FAC to A4 is down or up the
FAC to F3, do the same thing to C6 and after average the FAC numbers and use
this average as new FAC numbers.
I discovery this trying to tune two pianos with a great  difference: an
YAMAHA and a CHICKERING both grands.
The results are very good.
ROGERIO CUNHA IC MEMBER OF THE GUILD