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Whenever a scale is used to weigh, some plate, bowl, or other container is used to hold small items. The resulting weight is a sum of tare weight plus the weight of the items for which weight is desired. To remove the tare weights and accommodate other factors such as temperature changes, the scale indication is checked and set to zero with everything used to weigh in place. This process setting to zero of the weight of all items that affect the weight is referred to as 'zeroing'. Especially for home scales, 'zero-ing' is recommended to be done each time something new is to be weighed. A home scale may be used for postage, food servings, personal weight, or many other uses.

Since electronic scales are now common, many have a built-in zeroing process that the computer part inside the scale will check the weight of all the parts used to allow weighing such as the weighing platform and the load cells. It will take a few readings from the load cells and determine a value from the zeroing process that it will use as the "zero weight" load on the system. From there you may then weigh yourself, or whatever with an accurate value.

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