At 08:13 PM 10/22/2002, Bill Davidson wrote:
>Has anyone made their own manometer?
>
>If so, it would be great if you could share your design...

Quick-and-dirty -- take a stake (hang it, drive it in the ground, make a
flat base, clamp it to something) and tape plastic aquarium or larger
tubing to it so that the vertical legs are together and the loop at the
bottom is large enough that the tubing doesn't kink.  Larger tubing is
easier to fill, clear of bubbles etc.  If you want to get a touch fancier
you can put a 90-degree fitting at the top so the feed tube has less
tendency to kink.

Real minimalist just tape the tubes together and let them hang free from
the driver's door handle or whatever.  Hang a little weight off the bottom
so they straighten a little for convenience in measuring (though strictly
it doesn't matter if they're tied in a bow, you're just measuring the
vertical distance between the two meniscii).

Going in the other direction you can get fancy with routed grooves for the
tubing, fixed (or better, sliding) scales, mirror backing, glass tubing,
gilt cherubs at the corners... <g>

david

>thanks,

--
David Beierl - Providence, RI
  http://pws.prserv.net/synergy/Vanagon/
'84 Westy "Dutiful Passage"
'85 GL "Poor Relation"