Kurt Schmid was one of the first to turn his uTracer into a beautiful instrument (Dec 2012).
He used a special Bogey calibration tube to test the accuracy of the uTracer. It turned out to be better than 1.8%!
Visit the Testimonial Page to view this and many other beautiful uTracer implementations.

Zbigniew Stelmasiak from Warsaw compressed the construction of a uTracer into 4 min! Have a look!

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Cartoon specially made for me by Ale Moglia!
More beautiful cartoons on his site Bartola Valves