Department of Agriculture, Trade and Consumer Protection

Service Companies

Businesses that install, service, test or calibrate weights and measures are required under Wisconsin Administrative Code ATCP 92.20 to be licensed by the Wisconsin Department of Agriculture, Trade and Consumer Protection. Licenses expire on December 31 of each year and are not transferable between persons or business locations.

• or submit a paper Weights and Measures Service Company Application
• Weights and Measures Service Company Listing  
• This list identifies service companies and devices they are certified to inspect. Businesses looking for a company to inspect their commercial devices can use this link.
• Weights and Measures Service Company Test Report Requirements Fact Sheet​ 

Service Techn​​icians

Individuals who are employed by a weights and measures service company and who provide testing, calibration, service or sealing to a weighing and measuring device, verify that the device is correct, or who remove an official rejection tag or mark applied under Wis. Admin. Code ATCP 92.09 (2), are required under Wis. Admin. Code ATCP 92.21 to have technician certification issued by DATCP.  Certification must be renewed every five years and includes:

Veterans:  For information on how to apply for License Fee Waiver under Act 209, see Veterans License Fee Waiver Program: 2011 Wisconsin Act 209.

• Weights and Measures Technician Listing by Service Company
• The technician listing identifies service companies, locations, contact information, and device areas in which they have certified technicians. The list also contains the company’s technician(s) name, seal identifier, device category, and the date their device certification expires.
• Weights and Measures Technician Device Certification Listing  
• The technician device certification listing identifies all certified Wisconsin technicians. This includes the technician’s name, seal identifier, and device certifications.
• Weights and Measures Technician FAQs
  

Examination Requirements - Service Technician Certification

In order to be certified for a weights and measures device, you must first pass two exams (except Farm Milk Tank, which requires only the Farm Milk Tank exam). The first exam is based on the General Code provisions in the National Institute of Standards and Technology (NIST) Handbook 44. The second exam is your chosen device certification, and is also based primarily on the material in Handbook 44. All the exams are open book test.

*COVID-19 Update: Technician certification exams have resumed. Due to the impacts of C​OVID-19, the scheduling of test locations and dates is ongoing and subject to change. Additionally, the number of testers permitted at each exam is limited. 

• ​2023 Exam Schedule​
  

• or submit a paper Service Company Technician Exam Application
  

Technicians are responsible for obtaining a current copy of Handbook 44 (updated annually), familiarizing themselves with it, and bringing it with them to the exam. To obtain Handbook 44:

• Purchase a copy from the National Conference of Weights and Measures (NCWM)
• Purchase a copy from the Superintendent of Documents, U.S. Government Printing Office
• Download a free electronic copy from the National Institute of Standards and Technology (NIST)

Technician Certification with Minnesota

Wisconsin will register certified technicians who have passed exams from Minnesota within the past 5 years. Technicians need to complete and return the Service Company Technician Reciprocity Certification, including any proof of registration or a copy of test results from Minnesota.

Technicians who have not yet taken the exams but wish to operate in Minnesota can take the exams in Wisconsin. The state of Minnesota requires the administration of an exam based on their state law in addition to the exams on Handbook 44. Applicants will need to contact Minnesota prior to submitting a Service Company Technician Exam application to DATCP in order to obtain the necessary test preparation materials, as well as complete any of Minnesota’s service company registration requirements.

For questions on reciprocity with Minnesota's Placing-In-Service program, please contact:

Brett Willhite
brett.willhite@state.mn.us
651-539-1564

Service Company and Technician Laws

• Wisconsin Administrative Code
  Subchapter III — Weights and Measures Service Companies, sections 92.20 - 92.24

• Wisconsin Statute
  98.18 Installing and servicing weights and measures - Prohibited acts; penalty; injunction, section 98.26

Example Test Reports for Service Companies

DATCP has developed the following example test reports in order to assist service companies in complying with the legal requirements for weights and measures test reports. Use of these reports is optional.

• Vehicle Tank Meter Example Test Report
  
• Class III Retail Computing Scale Example Test Report
  
• Medium Capacity Scale Example Test Report
  
• LPG Meter Example Test Report
  
• ​Retail Motor Fuel Device Meter Example Test Report
  
• Vehicle Scale Example Test Report​
  

Contact​

(608) 224-4942, option 2

DATCPWeightsandMeasures@wisconsin.gov