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]

                  Parties, Practitioners, and Witnesses