The state superintendent of weights and measures may designate any weighmaster duly appointed under the provisions of sections 51:1-73 to 51:1-80 of this title, to weigh commodities on approved scales at points located not more than one mile outside of the state, and certificates of weight issued by such weighmasters shall have the same force and effect as certificates issued under the provisions of said sections 51:1-73 to 51:1-80; provided, that any weighmaster designated under this section shall at all times continue to be a resident of the state of New Jersey.
N.J.S. § 51:1-80.1