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Registered Service Person or Agency

Registered Service Person or Agency

  • Any service agency and or individuals employed to install or repair weighing and/or measuring devices in the State of Michigan. (i.e. scales, meters) and wishes to legally "place in service" the device for "commercial" use. Pursuant to the Michigan Weights and Measures Law P.A. 283 of 1964 as amended.
  • A $300.00 fee per service agency (if multiple branch office exist) and $100.00 per service person. Each is renewed every two years.

  • Application forms and detailed instructions for both service agency and person can be found at Michigan.gov/WMInfo under the heading of Service Registration.

    Completed forms and fees are to be mailed two weeks prior to test date to:

    E.C. Heffron Metrology Laboratory
    940 Venture Lane
    Williamston, MI 48895

  • Yes, if you are the owner/operator of a service agency, you must also provide copies of certifications for all field standards (test equipment) intended for use. Certifications must be from an accredited National Institute of Standards and Technology (NIST) laboratory.
  • No agency or person can become or maintain registration without the proper certification of field standards.

  • Yes, all applicants (service persons) must schedule to take a minimum of three exams:

    1. The Michigan Weights and Measures Law
    2. NIST Handbook 44
    3. Specific Device Code (ex. Retail Motor Fuel Dispenser, Vehicle Scale, etc.)

    A passing score of 80% is required.

  • The exams are typically offered other month, and testing is conducted at the E.C. Heffron Metrology Laboratory located in the city of Williamston. Information regarding current testing dates and location can be found at Michigan.gov/WMInfo under the heading of Service Registration.
  • No, all passing scores remain current throughout the 2-year period of registration. However, all service persons must retake all applicable exams every 4 years per State of Michigan law. A person who allows a registration to lapse for an extended period of time may be required, at the discretion of the Weight and Measures Administrator, to retest.
  • It is the responsibility of the Service Agency to notify the Office of Weights and Measures immediately when a register service person is no longer employed under the registration of a particular agency. It is also, the responsibility of the individual Registered Service Person to contact the Office of Weights and Measures to provide information required to update the individual registration and to ensure that the registration remains current.