California Business And Professions Code Section 12107

The director shall establish tolerances and specifications and other technical requirements for commercial weighing and measuring. In doing so, the director shall adopt, by reference, the latest standards as recommended by the National Conference on Weights and Measures and published in the National Institute of Standards and Technology Handbook 44 Specifications and Tolerances, and other Technical Requirements for Weighing and Measuring Devices, except as specifically modified, amended, or rejected by regulation adopted by the director. The director may, by regulation, establish tolerances and specifications for commercial weighing and measuring devices not included in Handbook 44. Any regulation shall be adopted, amended, or repealed in conformity with Chapter 3.5 (commencing with Section 11340) of Part 1 of Division 3 of Title 2 of the Government Code. It shall be unlawful for any person to violate any of the rules, regulations, tolerances, specifications, or standards established under this section.