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Weights and Measures information Michigan

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Everything you need to know for Michigan

Weights and Measures information

Please contact Weights & Measures

Phone: (517) 655-8202


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By law, Michigan requires that any commercial scale meets the following requirements

  • Successful completion of the Michigan Weights and Measures Act examination
  • Successful completion of the National Institute of Standards and Technology (NIST) Handbook 44 General Code examination
  • Successful completion of the NIST Handbook 44 device specific examination for which registration is being sought
  • Documentation verifying possession of certified test standards

The mG-Scales Certificate of Conformance can be found here

For more information contact Weights & Measures


Scale calibration needs to be completed by a certified Service Company

A complete list can be found HERE, by searching for “Retail Computing Scales” under Registration Type

After calibrating and installing the scale, the service company will complete a Placed-In-Service Report.


It is recommended to have the scale recalibrated once a year to ensure accuracy

At random an officer from Weights & Measures will visit to inspect the scale

If the scale fails inspection the business is subject to fine.

Related Materials

NTEP Certification Search

NIST Handbook 44 (2018 Edition)

Certificate of Conformance #17-152A1

Michigan Weights & Measures Brochure

Service Company Search 

Related Links

Placed-In-Service Report

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