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Hi Alan. Not so sure you could make one as cheap as the $20 you're going to
spend just buying one. Have you developed a schematic for how you'll wire all
the parts together ? Will you use a "gas gage" type indicator or something else.
If you get it all set up, even just on the bench, you might consider making a
little presentation on the projects page. I bet lots of guys would be
interested. Looking forward to how this develops.
Frank D.
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