In addition to the State standards provided for in section 2653 of this title, there shall be supplied by the State such "field standards" and such equipment as may be found necessary to carry out the provisions of this title. The field standards shall be verified upon their initial receipt and, thereafter, as often as deemed necessary by the Commissioner by comparison with the State standards. (Added 1967, No. 102, § 5, eff. April 14, 1967; amended 1971, No. 69, § 5, eff. April 15, 1971; 1991, No. 227 (Adj. Sess.), § 7.)