It is unlawful to keep for the purpose of sale, offer or expose for sale, or sell textile yard goods put up or packaged in advance of sale in a bolt or roll, or any other textile product put up or packaged in advance of sale in any other unit, for wholesale or retail sale, unless the bolt or roll, or other unit, is definitely, plainly, and conspicuously marked to show its net measure in terms of yards or its net weight, in terms of avoirdupois pounds or ounces, subject to the following limitations and requirements:

(1) a unit of twine or cordage may be marked to show its net measure in terms of feet; readywound bobbins not sold separately are not required to be individually marked, but the package containing the bobbins shall be marked to show the number of bobbins contained in it and the net weight or measure of the thread on each bobbin; a unit of sewing, basting, mending, darning, crocheting, tatting, hand-knitting, or embroidery thread or yarn, except nylon hand-knitting yarn, that is not composed in whole or in part of wool, the net weight of which is less than two ounces avoirdupois, shall be marked to show its net measure in terms of yards as unwound from the ball or from the spool or other holder; a retail unit of a textile product sold only for household use consisting of a package containing two or more similar individual units that are not sold separately shall be marked to show the number of individual units in the package and the net weight or net measure of the product in each individual unit, but this does not apply where the individual units are separately marked; a unit of yarn, composed in whole or in part of wool, sold to consumers for handiwork, shall be marked to show the net weight of the yarn, except that any such unit of tapestry, mending, or embroidery yarn, the net measure of which does not exceed 50 yards, may be marked to show its linear measure only;

(2) the marking required by this section shall in all cases be in combination with the name and place of business of the manufacturer, packer, or distributor of the product, or a trademark, symbol, brand, or other mark that identifies the manufacturer, packer, or distributor;

(3) reasonable tolerances shall be permitted, and these must be included in regulations for the enforcement of this section that are adopted by the director;

(4) this section does not apply to the following textile products when sold at wholesale in bulk by net weight: cordage, agricultural bag sewing threads, twines, yarns that are to be processed, and yarns that are to be industrially converted into end-use products.