The following abbreviations and none other may be employed in the required net quantity declaration: Inch--in.Feet or foot--ft.Fluid--fl.Liquid--liq.Ounce--oz.Gallon--gal.Pint--pt.Pound--lb.Quart--qt.Square--sq.Weight--wt.Yard--yd.Avoirdupois--avdp.Cubic--cu.
Note: Periods and plural forms shall be optional.