An annual publication issued by the National Institute of Standards and Technology. It contains recommended regulations adopted by the membership of the National Conference on Weights and Measures.

The publication is of special interest to petroleum marketers because it includes a section on retail measurement of liquid products. The provisions in Handbook 44 are adopted by weights and measures agencies in most states and cities. As a consequence, what this publication says about requirements for motor fuel dispensers is of critical concern to petroleum marketers.

PEI members can download the latest copy of Handbook 44 from the Members Only section of the PEI website.