N.H. Code Admin. R. Agr 1405.14
Retail and wholesale liquid measuring devices shall be tested with test equipment certified in accordance with NIST Handbook 44 "Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices".
Source. (See Revision Notes #1 and #2 at chapter heading for Agr 1400) #12424, eff 12-1-17