3 ms·

Because the user otherwise will spot the discrepancy and pronounce "these scales are rubbish" (which in a way they are).

• lo_zamoyski 3y ago
  So why not fix the scale so it isn't rubbish?
  • misnome 3y ago
    That costs more, and the consumer wouldn’t buy it.
  • mankyd 3y ago
    Cost. They system has found an equilibrium: customers are willing to pay ~$X for a scale. For $X you can afford Y accuracy. If you increase the accuracy, great, but now your scale costs more then $x.