[pianotech] A432 Tuning Fork

[Andrew Anderson]

Room temperature varies considerably.  Pocket temperature is much more  
reliable (the human body temperature varies little from person to  
person).  Check this out and then decide on modification.

Andrew Anderson
On Jan 19, 2011, at 10:04 AM, James Sasso wrote:

> Hello Everyone;
> I just bought a John Walker tuning fork from Schaff in preparation  
> for my tuning exam. All electronic instruments indicate this fork is  
> 6-8 cents flat at room temperature.  I'd like to get some feedback  
> as to options. My other forks average average to within 2 cents of  
> C5 and A4 but the A4 one is aluminum. I was thinking of keeping and  
> filing the John Walker fork, but wouldn't 6-8 cents require an awful  
> lot of filing and mutilation of the fork? Another option would be to  
> return the current one and ask Schaff to send one closer to A440. A  
> final option I've considered is to purchase a Sanderson Accu-fork  
> ($165 Pianotek). Any comments would be appreciated.
> Thanks,
> Jim