Keeping A440

[Don]

Hi Julia,

Humidity changes make huge differences. My "rule of thumb" is a 4 cent
change in pitch is caused by a 5% variation in humidity. Does the service
record include humidity readings? 

At 07:44 AM 3/15/2004 EST, you wrote:
>Greetings,
>  
>               I find this difficult to fathom. Yet the tuner's card is
>inside the piano with all the dates written on it. 
> 
>              I am really having a hard time believing that these pianos
>were actually brought up to pitch at each tuning. I own a Yamaha. They hold
>a tuning (In my home anyway). The pianos are only used about 10 hours a
>week more than a residence. What could be causing such a drop? 
> 
> rookie
> Julia Gottchall'
>   

Regards,
Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T.

mailto:pianotuna@accesscomm.ca
http://us.geocities.com/drpt1948/

3004 Grant Rd.
REGINA, SK
S4S 5G7
306-352-3620 or 1-888-29t-uner