I believe he means the chord of a circle or arc, in this case, the straight line connecting the two points where the lower edge of the soundboard touches the rim (right, Ron?). --Cy-- ----- Original Message ----- From: "Phillip Ford" <fordpiano@earthlink.net> To: <pianotech@ptg.org> Sent: Friday, October 29, 2004 2:07 PM Subject: Re: The Richard Gertz myth > Ron, > > Would you explain what you mean by the cord line?
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