(a) It shall be the duty of every weighmaster in this state to provide himself with a seal at his own expense which shall have inscribed on the outer margin thereof his name and the word “Alabama,” with the words “Public Weigher” inscribed in the center of such seal.
(b) Such seal shall be impressed upon each and every weight certificate issued by such weighmaster, and such seal, when applied to weight certificates, shall be a recognized authority of accuracy.