Standard weighing and measuring instruments.

(1) For the purpose of verifying the correctness of weights and measures and of weighing and measuring instruments used in transactions for trade or commerce, the Administrator may cause to be prepared as many sets of weighing and measuring instruments as he may deem necessary. (2) Such instruments shall be of such kind, kept in such number and shall be verified and stamped in such manner as may be prescribed. (3) Such instruments shall be kept at all places where secondary standards or working standards are kept.