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<DIV><FONT face=Arial size=2>Sorry, it's been a long day...</FONT></DIV>
<DIV>Jude Reveley, RPT<BR>Absolute Piano Restoration, LLC<BR>Lowell,
Massachusetts<BR>(978) 323-4545</DIV>
<DIV style="FONT: 10pt arial">----- Original Message -----
<DIV style="BACKGROUND: #e4e4e4; font-color: black"><B>From:</B> <A
title=absolutepiano@comcast.net href="mailto:absolutepiano@comcast.net">Absolute
Piano</A> </DIV>
<DIV><B>To:</B> <A title=pianotech@ptg.org href="mailto:pianotech@ptg.org">Piano
Tech List</A> </DIV>
<DIV><B>Sent:</B> Thursday, October 04, 2007 8:11 PM</DIV>
<DIV><B>Subject:</B> Introducing the Crownulator</DIV></DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>For all you folks that have already made your
Farell/Wixey/Lowell downbearing guages and are wondering what to do with your
old bubble guages, I introduce..</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> <FONT size=4>"The Crownulator"</FONT> (patent
pending)...:)</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Finally a guage that accurately measures crown to
the thousandth of an inch and fits up in the high treble and other tight
spaces.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>How much would you pay for such an
instrument?</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Wait, don't answer yet because I'm also including a
set of Ginsu knives and complimentary lemon peeler.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Crown is measured over a 12" span and measures up
to .750" (3/4").</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>You can easily figure your radius by plugging your
measured value into the following formula as H...</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>R= ((H^2+36)/2H)/12</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>For example, in the picture the guage measures
.715". The guage counts backwards so that's .035" of crown over 12"
(.750-.715=.035).</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thus, ((.035^2+36)/.07)/12 is roughly a
42.8586011904761' radius. I've never been one for the 60' radius unloaded
anyway.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The 36 is based on a 12" span, so if you choose a
different span, the value should be your span^2/.25.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Have fun,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Jude Reveley, RPT<BR>Absolute Piano Restoration,
LLC<BR>Lowell, Massachusetts<BR>(978) 323-4545</FONT></DIV>
<DIV> </DIV>
<DIV> </DIV>
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