Cal. Bus. & Prof. Code § 12714

(a) There shall appear in an appropriate and conspicuous place on each certificate, and all copies thereof, the following legend:
WEIGHMASTER CERTIFICATE

THIS IS TO CERTIFY that the following described commodity was weighed, measured, or counted by a weighmaster, whose signature is on this certificate, who is a recognized authority of accuracy, as prescribed by Chapter 7 (commencing with Section 12700) of Division 5 of the California Business and Professions Code, administered by the Division of Measurement Standards of the California Department of Food and Agriculture.
(b) There shall also appear on each certificate, and all copies thereof, the printed name of the principal weighmaster as it appears on the license.