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A hard surface is best for maximum accuracy. Placing scale on a very soft, deep pile rug may affect the weighing accuracy. 2. Locate zero adjustment control on edge of scale and adjust so the indicator reads zero. 3. Step on and off scale to check the "zero" setting. If pointer does not return to zero, repeat Step #2. 4. Step on scale and position your feet in a manner that will distribute your weight evenly over the entire scale platform. Stand still while reading display. NOTE: It is norma