<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META charset=US-ASCII http-equiv=Content-Type content="text/html; charset=US-ASCII"> <META content="MSHTML 6.00.2800.1458" name=GENERATOR></HEAD> <BODY style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; BACKGROUND-COLOR: = #ffffff"> <DIV><SPAN class=377592207-20082004>You are right - Jim Coleman was = the designer . most ingenious device and easy to make one.</SPAN></DIV> <DIV><SPAN class=377592207-20082004></SPAN> </DIV> <DIV><SPAN class=377592207-20082004>And indeed "anybody can make his = own, not "its" own, I guess the meaning is different (?)</SPAN></DIV> <DIV><SPAN class=377592207-20082004></SPAN> </DIV> <DIV><SPAN class=377592207-20082004></SPAN> </DIV> <DIV><SPAN class=377592207-20082004>Isaac</SPAN></DIV> <DIV><SPAN class=377592207-20082004></SPAN> </DIV> <DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma>-----Message d'origine-----<BR><B>De :</B> pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]<B>De la = part de</B> BobDavis88@aol.com<BR><B>Envoyé :</B> vendredi 20 août = 2004 09:07<BR><B>À :</B> pianotech@ptg.org<BR><B>Objet :</B> = Re:setting pitch with a fork<BR><BR></FONT></DIV> <DIV>Well, make that twice I replied to Isaac instead of the list:</DIV> <DIV> </DIV> <DIV> <DIV> <DIV>In a message dated 8/19/2004 11:36:54 PM Pacific Standard Time, oleg-i@noos.fr writes:</DIV> <BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px = solid"><SPAN class=215312606-20082004><FONT face=Arial color=#0000ff>I recall = an ingenious device from Sanderson, that anybody can make its own, these are 2 = rules (of different height) made of strips of thick paper where the spacing at = the end of the key is marked with the partial series enlighten. The 2 strips = can be used one at the lower note of the interval to be tested and the other = on the highest, and the scale show immediately where the partials are = coincident. </FONT></SPAN></BLOCKQUOTE></DIV> <DIV>Just last week I made such a device (in minutes, out of poster = board) for my PTG chapter tuning demonstration. I think everyone should have one = until they are facile with the partial series and coincident partials. I gave = credit to Jim Coleman, Sr., because that's who my fuzzy memory contained as the first person I saw use it. Was Al Sanderson actually the first? = It's so clever I would like to credit the right person.</DIV> <DIV> </DIV> <DIV>Bob Davis</DIV></DIV></BODY></HTML>