Online Resources

U.S. & International Government Agencies

• Federal Trade Commission (FTC)
• Food and Drug Administration (FDA)
• International Standards Organization
• National Institute of Standards & Technology (NIST)
• NIST Physics Laboratory Page on The International System of Units (SI)
• NIST Metric Page
• NIST Office of Weights & Measures

State & Local Government Agencies

 National Conference on Weights and Measures

Scroll down on the NCWM home page and you'll find a state-by-state listing of contacts.

Associations & Nonprofits

• American National Standards Institute (ANSI)
• ASTM
• Cecip - The European Weighing Industry Association
• Central Weights and Measures Association
• International Society of Antique Scale Collectors (ISACS)
• National Conference on Weights & Measures (NCWM)
• National Industrial Scale Association (NISA)
• Northeastern Weights and Measures Association
• Scale Manufacturers Association
• Southern Weights & Measures Association (SWMA)
• Western Weights and Measures Association

Trade Publications & Other Resources

• Cal Lab - The International Journal of Metrology
• iWeigh & Measure