Does it have to do with accuracy?
In: 117
One issue is that gravity varies by up to 0.7% depending where you are on earth and that’s way too big of an error to ignore for things like boxing weights, where ounces matter over hundreds of pounds.
Balance scales are unaffected by changes in gravity because they’re comparing mass to mass and gravity affects both sides equally. Electronic scales are measuring force, not mass, so they need to be accurately calibrated in each location.
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