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This publication is available free of charge from: https://doi.org/10.6028/NIST.HB.130-2022

Table of Contents

Foreword...................................................................................................................................................................... iii

Committee Members .....................................................................................................................................................v

Past Chairs of the Committee .......................................................................................................................................vi

2021 Amendments........................................................................................................................................................ix

2021 Editorial Changes ................................................................................................................................................xi

I. Introduction ............................................................................................................................................................1

A. Source........................................................................................................................................................1

B. Purpose ......................................................................................................................................................1

C. Amendments..............................................................................................................................................1

D. Annual Meeting.........................................................................................................................................2

E. Final Committee Reports and Conference Action ....................................................................................2

F. Revisions to Handbook .............................................................................................................................2

G. Annotations ..............................................................................................................................................2

H. Effective Enforcement Dates of Regulations............................................................................................2

I. Section References....................................................................................................................................3

J. The International System of Units............................................................................................................3

K. “Mass” and “Weight” ...............................................................................................................................3

L. Use of the Terms “Mass” and “Weight” ..................................................................................................3

Form 15: Proposal to Amend Handbooks......................................................................................................4

II. Uniformity of Laws and Regulations..............................................................................................................5

A. National Conference Goal .........................................................................................................................5

B. Status of Promulgation ..............................................................................................................................5

C. Summary of State Laws and Regulations in Weights and Measures.........................................................5

III. Uniform Laws.......................................................................................................................................................11

A. Uniform Weights and Measures Law (WAM) ........................................................................................13

B. Uniform Weighmaster Law (WMR)........................................................................................................29

C. Uniform Fuels and Automotive Lubricants Inspection Law (FLL).........................................................41

IV. Uniform Regulations.............................................................................................................................................49

A. Uniform Packaging and Labeling Regulation (PAL) ..............................................................................51

B. Uniform Regulation for the Method of Sale of Commodities (MOS).....................................................99

C. Uniform Unit Pricing Regulation (UPR)...............................................................................................149

D. Uniform Regulation for the Voluntary Registration of Servicepersons and Service Agencies for 

Commercial Weighing and Measuring Devices (RSA)...............................................................................155
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E. Uniform Regulation for National Type Evaluation (NTP) ....................................................................171

F. Uniform Fuels and Automotive Lubricants Regulation (FLR) ..............................................................179

V. Examination Procedure for Price Verification (PPV) .................................................................................213

VI. NCWM Policy, Interpretations, and Guidelines (POL)...............................................................................245