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<DIV><FONT face=Arial size=2>Wow, thanks, Fred. Maybe I'm overly in touch
with my feminine side, but I think it's downright cute. The level on top
is cool. Think I might make me one (you didn't go and patent it, did you?
:-)</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Jeff</FONT></DIV>
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<DIV style="FONT: 10pt arial"> </DIV>
<DIV style="FONT: 10pt arial">-- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=fssturm@unm.edu href="mailto:fssturm@unm.edu">Fred Sturm</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=caut@ptg.org
href="mailto:caut@ptg.org">College and University Technicians</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, April 03, 2006 12:15
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [CAUT] downbearing gauge,
homemade</DIV>
<DIV><BR></DIV>
<DIV style="MARGIN: 0px">Hi all,</DIV>
<DIV style="MARGIN: 0px"><SPAN class=Apple-tab-span
style="WHITE-SPACE: pre"></SPAN>Below are pictures of a downbearing gauge I
made fairly recently.</DIV>
<DIV style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica
size=3><SPAN class=Apple-tab-span style="WHITE-SPACE: pre"></SPAN>The basic
component of this is the graduated line level, made for gutter hangers,
plumbers and the like. It has lines corresponding to 1/8", 1/4", 3/8", and
1/2" per foot, which translates into a 1:96, 2:96, etc ratio, very close to
1:100, or a sine or tangent of .01 per unit. Set it on one segment and adjust
to 0, then check other segments in comparison. (Start on one side of the
bridge, with 0 facing the bridge). Or, for that matter, adjust to 1/8, so you
can measure a negative difference in slope. Or just remember what it is and
compare.</FONT></DIV>
<DIV style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica
size=3><SPAN class=Apple-tab-span style="WHITE-SPACE: pre"></SPAN>This was a
bare-bones design, easy to make. There are lots of ways it could be made
fancier, but it works. The jiffy key lead on the bottom is for stability
(lower center of gravity, so the gauge sits nicely on the string segment). The
brass feet on the bottom are 1/8" brass stock, inserted and filed flat, then
grooved with a file. The adjustment screw is a machine screw with reasonably
fine threads. The hinge, which you can't see, is just a little decorative
thing I found in the drawer: the right size for the job. The line level is
scotch-taped onto the wood (hey, it holds, so I haven't bothered to do
anything different.</FONT></DIV>
<DIV style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica
size=3>Regards,</FONT></DIV>
<DIV style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica
size=3>Fred Sturm</FONT></DIV>
<DIV style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica
size=3>University of New Mexico</FONT></DIV>
<DIV style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica
size=3><A href="mailto:fssturm@unm.edu">fssturm@unm.edu</A></FONT><IMG
src="cid:004b01c6577d$91c604c0$ee205142@userv6vk22lw7n"><BR></DIV>
<DIV style="MIN-HEIGHT: 14px; MARGIN: 0px; FONT: 12px Helvetica"><BR></DIV>
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<DIV style="MIN-HEIGHT: 14px; MARGIN: 0px; FONT: 12px Helvetica"><BR></DIV>
<DIV style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica
size=3>100_2790.JPG</FONT></DIV>
<P style="MIN-HEIGHT: 14px; MARGIN: 0px"><FONT style="FONT: 12px Helvetica"
face=Helvetica size=3><SPAN class=Apple-converted-space>?</SPAN></FONT><BR
class=khtml-block-placeholder></P>
<DIV style="MIN-HEIGHT: 14px; MARGIN: 0px; FONT: 12px Helvetica"><BR><IMG
src="cid:004c01c6577d$91c604c0$ee205142@userv6vk22lw7n"><BR></DIV>
<DIV style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica
size=3>100_2791.JPG</FONT></DIV>
<P style="MIN-HEIGHT: 14px; MARGIN: 0px"><FONT style="FONT: 12px Helvetica"
face=Helvetica size=3><SPAN class=Apple-converted-space>?</SPAN></FONT><BR
class=khtml-block-placeholder></P>
<DIV style="MIN-HEIGHT: 14px; MARGIN: 0px; FONT: 12px Helvetica"><BR><IMG
src="cid:004d01c6577d$91c604c0$ee205142@userv6vk22lw7n"><BR></DIV>
<DIV style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica
size=3>100_2796.JPG</FONT></DIV>
<P style="MIN-HEIGHT: 14px; MARGIN: 0px"><FONT style="FONT: 12px Helvetica"
face=Helvetica size=3><SPAN class=Apple-converted-space>?</SPAN></FONT><BR
class=khtml-block-placeholder></P>
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