California Code
CHAPTER 5 - Weighing and Measuring Devices
Section 12516.

12516. It shall be unlawful for any person to locate or position any scale used in connection with the auctioning of livestock so that its indications are not readily and clearly readable to the buyer and seller, unless a state certificate of weights and measures, made at the time of weighing, attesting to the weight of the livestock, is issued upon request to the buyer and seller.

(Amended by Stats. 1955, Ch. 117.)