When I worked for this company back in the 70's they offered a line of
pressure gauges with built-in potentiometers.
http://www.speed-position.invensys.com/i1-6.html

The torque available from most gauges is so low that only a custom
potentiometer will work. Invensys can do the custom potentiometer but it
would cost big $.

You might do better with a rotary encoder module from Agilent
http://www.semiconductor.agilent.com/ look under motion control.

Paul

> -----Original Message-----
> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Chris Loiacono
> Sent: Monday, April 15, 2002 12:02 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Low-torque potentiometers
>
>
> Steve Baldwin gave me a great idea for measuring high-pressure a while
> back - that of dissecting or hacking a mechanical gauge
> mechanism, coupling it to a pot, then into an A/D pin.
> Now I have a very small shaft (which the needle-type dial
> indicator was once pressed on to) that I want to couple to a pot shaft.
> I have checked the vaiety of pots in my parts drawers and toy box, and
> they all seem to require more rotational torque than I would like to
> apply with the tiny mechanism. I want to find a type of pot that is easy
> to turn.
>
> I have searched the catalogs hoping to find some kind of designation that
> might apply - to no avail.
>
> Does anyone have any clues that may help me along with this???
>
> TIA,
> Chris
>
>

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