<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=iso-8859-1"> <META content="MSHTML 6.00.6000.16681" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>Andrew-</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>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.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>For the tuning exam, it's probably best to get an electronic A440.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Ed Sutton</FONT></DIV> <BLOCKQUOTE style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=anrebe@sbcglobal.net href="mailto:anrebe@sbcglobal.net">Andrew and Rebeca Anderson</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=ed440@mindspring.com href="mailto:ed440@mindspring.com">Ed Sutton</A> ; <A title=pianotech@ptg.org href="mailto:pianotech@ptg.org">Pianotech List</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, June 27, 2008 12:10 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Temperature and the Tuning Fork</DIV> <DIV><BR></DIV>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.<BR><BR>Andrew Anderson<BR><BR>At 08:17 AM 6/27/2008, you wrote:<BR> <BLOCKQUOTE class=cite cite="" type="cite"><FONT size=2>See p. 18 of the same issue (July).<BR>A good fork (such as the Walker forks) will have a specified calibration temperature.<BR>Some technicians prefer to calibrate the fork to a pocket temperature.<BR>See <A href="http://www.tunelab-world.com">www.tunelab-world.com</A> for calibration instructions.<BR>Ed Sutton<BR></FONT> <DL> <DD>----- Original Message ----- <BR> <DD>From:</B> <A href="mailto:toddpianoworks@att.net">Matthew Todd</A> <BR> <DD>To:</B> <A href="mailto:pianotech@ptg.org">pianotech@ptg.org</A> <BR> <DD>Sent:</B> Thursday, June 26, 2008 9:21 PM<BR> <DD>Subject:</B> Temperature and the Tuning Fork<BR><BR> <DD>Hi,<BR> <DD><BR>  <DD>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?<BR> <DD><BR>  <DD><BR>  <DD>Many thanks,<BR> <DD>Matthew<BR></DD></DL></BLOCKQUOTE><BR></BLOCKQUOTE></BODY></HTML>