Temperature and the Tuning Fork

[Ed Sutton]

Andrew-

I use the heavyweight Walker fork. It's calibrated to my pocket. I carry it in a leather pouch with an aquarium thermometer stuck to the pouch. At 82 degrees Farenheit it's accurate with two tenths of a cent, and it holds its temperature reasonably well.

For the tuning exam, it's probably best to get an electronic A440.

Ed Sutton
  ----- Original Message ----- 
  From: Andrew and Rebeca Anderson 
  To: Ed Sutton ; Pianotech List 
  Sent: Friday, June 27, 2008 12:10 PM
  Subject: Re: Temperature and the Tuning Fork


  I have one of those forks and I did calibrate it to my shirt-pocket temperature.  It seems to be the only way to "guarantee" as reasonably regular pitch (human bodies, barring illness, are finely temperature regulated).  What is interesting is how fast the pitch can change in a fork, particularly in a cute little thin one.

  Andrew Anderson

  At 08:17 AM 6/27/2008, you wrote:

    See p. 18 of the same issue (July).
    A good fork (such as the Walker forks) will have a specified calibration temperature.
    Some technicians prefer to calibrate the fork to a pocket temperature.
    See www.tunelab-world.com for calibration instructions.
    Ed Sutton

      ----- Original Message ----- 

      From: Matthew Todd 

      To: pianotech at ptg.org 

      Sent: Thursday, June 26, 2008 9:21 PM

      Subject: Temperature and the Tuning Fork


      Hi,



      On p. 9 of this issues journal, can you explain the temperature/tuning fork relationship?  What is the purpose of being able to keep track of it's temperature?  Also, what is the best way to store a tuning fork, and how do you get it calibrated?





      Many thanks,

      Matthew


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