Staff of the quality control department at Cal-Comp then inspect one-tenth of every batch of 500 calculators after they have been packed. If any fault is found, all 500 must be returned for improvement.
還需要通過一關更嚴格的測試。品質管制部要再抽驗，每五百台電算機中抽出五十台，如果其中有一台以上沒有通過試驗，這五百台就會被退回製造部，重新檢修。