Eli5 how do scales work? How do we know the weight shown is accurate?

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Eli5 how do scales work? How do we know the weight shown is accurate?

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Answer 1

You don’t have to work on chemistry tho! I work in a kitchen a we use digital scales all day long.

Remember, a pint is a pound in American towns. (this applies to liquid measures only)

But you can check your (postage) scale at home. 2 c of any liquid should equal one pound or 16 oz. You can use this as a non lab calibration.