I have just reviewed my USMA 18207
I wrote
>>> scales that weigh in pounds or kilograms should not be certified.
John Kilopascal replied
>>Don't you mean ... scales that weigh in pounds should not be certified.
>>Kilogram scales we want certified.
I replied
>I meant scales that weigh in both pounds and kilograms should not be
>certified. Those scales are electronic and switchable between pounds and
>kilograms. Those scales measure weight. Mechanical scales like Toledo
>("Honest weight, no springs") measure mass.
My remark that electronic scales measure weight was unnecessary and
misleading. It led to several exchanges. My intent was that all scales of
whatever sort that are capable of measuring pounds should not be certified.
Joseph B. Reid
17 Glebe Road West
Toronto M5P 1C8 Tel. 416 486-6071
