The Commissioner of Weights and Measures is authorized after a public hearing held to establish and promulgate such rules, regulations, specifications and tolerances to supplement and give full effect to the provisions of sections 43-36 to 43-44, inclusive, as he deems necessary. The commissioner may issue as regulations those specifications, tolerances and regulations for commercial weighing and measuring devices adopted by the National Conference on Weights and Measures set forth in the National Institute of Standards and Technology Handbook 44, as amended, of the United States Department of Commerce and incorporate them by reference. Such rules, regulations, specifications and tolerances shall have the force and effect of law. In addition to any provisions adopted by the National Conference on Weights and Measures, the commissioner shall not require any person to acquire a weighing or measuring device or instrument that exceeds the weighing or measuring needs of the business in which such device or instrument is employed.