(A) Each person maintaining and operating any weighing facilities used for, in connection with, or incident to the purchase or sale of livestock at any auction market, concentration yard, stockyard, packing plant, or place for assembling livestock in the state, shall do both of the following:

1. (1) Maintain and operate all the weighing facilities so as to ensure accurate weights;
2. (2) Be licensed as a weigher, or employ one or more weighers licensed by the department of agriculture, and require that all livestock handled for purchase, sale, or exchange be accurately weighed by the licensed weighers upon scales approved by the department and inspected, tested, maintained, and operated in accordance with this section. This section does not prevent such weighers from performing other duties not inconsistent with this section.

(B) Any person maintaining and operating a weighing facility used for the purposes set forth in this section may operate unapproved scales if he meets all of the following conditions:

1. (1) Signs and files with the director of agriculture an affidavit stating that any unapproved scales will not be used in connection with the purchase, exchange, or sale of livestock;
2. (2) Posts a conspicuous sign above any unapproved scales stating, "this scale cannot be used to weigh livestock for purchase, exchange, or sale";
3. (3) Agrees to submit to an audit of market records once every six months by the director or any of his authorized agents.