New Jersey Statutes Title 51. Standards, Weights, Measures and Containers 51 § 1-45

The governing body of each county and municipality shall fix the numbers of assistant superintendents therein, and by resolution may authorize the superintendent to appoint them. The governing body of each county and municipality may provide for the position of a deputy superintendent and by resolution may authorize the superintendent to appoint one of his assistants as deputy superintendent. The deputy superintendent shall act and have all the powers and duties of a superintendent when: (a) so directed by the superintendent, and a directive to that effect is filed with the State superintendent; or (b) a vacancy occurs in the office of a county or municipal superintendent, in which event he shall serve in that capacity until such superintendent returns to duty or his successor is duly appointed and qualified. Such deputy superintendent and assistants shall be under the direct control of their respective superintendents. They shall have all the powers and duties of a superintendent in making inspections, tests and measurements.