Idaho Code § 71-231: Certification of state standards — Field standards.

The weights and measures of the state used as state standards shall, when they have been certified as being satisfactory for use by the national bureau of standards or its successor organization, the national institute of standards and technology, be the state standards of weight and measure and they shall be maintained in such calibration as prescribed by the national institute of standards and technology. There shall also be "field standards" and such equipment as may be found necessary to carry out the provisions of this act. Said field standards shall be tested by the bureau each year.