A public weigher of fish may appoint, subject to the approval of the mayor or the chairman of the selectmen, deputy weighers, for whose official conduct he shall be answerable, who shall be sworn, and from each of whom such weigher shall require a bond, with sureties, in the sum of one thousand dollars. The weigher and his deputies shall not be interested directly or indirectly in the buying or selling of fish.
Mass. Gen. Laws ch. 41, § 89