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Bathroom scales
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Are electronic bathroom scales more acurate than mechanical ones?
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For more on marking an answer as the "Best Answer", please visit our FAQ.Digital bathroom scales are more consistent because the mechanical ones usually rely on springs which lose their tone over time and change with temperature, etc. This is the reason why mechanical ones need frequent calibration (re-setting of the zero). Those digitals (most ?) which operate on strain gauges are, I believe, not only consistent but also easily the most accurate. Prices of these have come down sharply to the point where they are almost as cheap as the mechanicals. Digitals usually measure to at least within 200g, if not 100g - those marketed in the UK can usually be switched to stoneage measure.