[feature request] add options to use #.## precision, average (smoothen) measurements

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Precision choice could be on/off For averaging e. g. add a numerical option [1...20] or so (default 1) , how many recent measurements should be averaged Instead of the radio buttons 1000x, 1x, 0.001x, I would also prefer a numerical option e. g. [-4...4], I default 0