http://www.harborfreight.com/tread-depth-tire-gauge-95079.html

Cheap place to start. Check the guts of something like this.
Most of them don't have batteries you can swap out so maybe
there's a dead one in your car you can open up. :-)

On 5/11/2011 2:40 PM, alan smith wrote:
> ive been looking for something that I can attach to an air line and read =
the pressure out, analog voltage is probably whats available.  My searches =
keep putting me back to barometric sensors.  The idea is to replace a mecha=
nical gauge since I have a LCD and pic micro in the unit.  The range is a 0=
-90PSI that I need to cover.
>
> Im sure they make them, just haven't come across anything yet.
>   =20

--=20
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