Okla. Stat. tit. 2, § 2-14-4: General control - Seal

The Bureau of Standards shall be available to all state

departments, municipal and private corporations, and citizens of

this state. The Bureau shall be the highest official authority with

regard to standards of weights, measures, and testing devices, and

methods of weighing, measuring, and testing for this state. The

findings of the Bureau of Standards in any case or question shall be

considered prima facie evidence of the correctness of the case or

question. All officers enforcing the standards for weights,

measures, and testing devices in this state shall submit their

weighing, measuring, and testing devices to the State Bureau of

Standards at those periods determined by the Director of the Bureau

of Standards for certification and seal.