No person shall attend to any weighing or measuring by means of weighing or measuring equipment available for use by the public, being a weighing or measuring demanded by a member of the public and for which a charge is made, other than a weighing or measuring of a person, unless he holds a certificate from a chief inspector that he has sufficient knowledge for the proper performance of his duties.

Any person refused such a certificate by a chief inspector may appeal against the refusal to the Secretary of State, who may if he thinks fit direct the chief inspector to grant the certificate.

Any person who contravenes, or who causes or permits any other person to contravene, subsection (1) above shall be guilty of an offence.