Weights and Measures Information – Wisconsin

Introduction

This article provides information for using and maintaining an NTEP-certified scale for commercial applications in the state of Wisconsin, including registration, installation, calibration, inspection and maintenance requirements.

For the most current requirements, contact the Wisconsin Department of Agriculture, Trade and Consumer Protection (DATCP) – Bureau of Weights and Measures.

Weights and Measures Information

Phone: (608) 224-4942

Email: DATCPWeightsAndMeasures@wisconsin.gov

Website: Wisconsin Bureau of Weights and Measures

Registration

Wisconsin follows the requirements of NIST Handbook 44, along with applicable state laws and regulations.

Commercial scales must have a valid NTEP Certificate of Conformance and meet applicable requirements of NIST Handbook 44.

Commercial weighing devices are subject to state or local weights and measures inspections, depending on the municipality.

Calibration

A DATCP-licensed service company with a certified service technician is required to install, inspect and calibrate the scale before it is used commercially.

The service company must prepare a written test report documenting the work performed and provide a copy to the scale owner or operator within 10 days.

Once properly installed, tested and sealed, the scale may be used commercially, subject to any additional local inspection requirements.

Maintenance

Have the scale regularly serviced and calibrated to maintain accuracy.

Commercial scales are subject to inspection and testing by DATCP or the appropriate local weights and measures authority to verify accuracy and compliance.

Scales that fail inspection may be removed from service until corrected and may be subject to enforcement action.

Servicers

The following companies provide scale calibration, installation, maintenance or repair services in Wisconsin. Contact the company to confirm service availability, equipment compatibility and current licensing status.

Related Materials

NIST Handbook 44 (Current Edition)

NTEP Certificate of Conformance Search

mG-S NTEP Certificate of Conformance

mG-T NTEP Certificate of Conformance

Wisconsin DATCP – Weights and Measures Program

Wisconsin DATCP – Licensed Service Companies and Technicians

Wisconsin DATCP – Weights and Measures Service Company and Technician Listing (PDF)