Sec.  1.19   Use of metric units required.

   Where parenthesized English units accompany metric units throughout this
   chapter, and the two figures are not precisely equivalent, the metric unit
   shall be considered the sole requirement; except, however, that the use of
   metric  paper sizes is not currently required, and compliance with the
   English  unit  shall be considered sufficient when the Commission form
   requests that data showing compliance with that particular standard be
   submitted in English units.

   [ 58 FR 44893 , Aug. 25, 1993]

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