Scale Rules by State & Province

The weights & measures program for every U.S. state and the District of Columbia, local office finders for California, New York, New Jersey, Ohio, Indiana and Pennsylvania, and Canada’s federal authority with the 89 Measurement Canada authorized service providers listed in our directory — compiled from official government sources, linked on each guide.

Find your W&M office: every state director with phone & email, one search

Local office finders: California · New York · New Jersey · Ohio · Indiana · Pennsylvania · Measurement Canada offices

Every office on this map is also listed below the map, with a link to its state guide.

The office shown is the Weights & Measures division that actually schedules device inspections and placed-in-service checks — often a small unit inside the state Department of Agriculture. Call early: in many states, getting an inspector out takes weeks. Pins mark the approximate location (city or ZIP-code level) of each program's published office address.

All 51 jurisdictions

Every state plus the District of Columbia — requirements, the responsible agency, and the official registry of licensed service companies where one is published.

Canada — Measurement Canada authorized service providers

Canada does not work like the United States. There is no province-by-province weights & measures office: Mesures Canada / Measurement Canada is the single federal authority, and it authorizes private companies to inspect and certify devices. Browse those providers by province below, or verify any of them on Measurement Canada’s official site. Need the government office itself? Find your Measurement Canada district office →

Our directory lists 89 Measurement Canada authorized service providers; Measurement Canada’s own register is larger. The numbers below count the listed providers serving each province, and many serve more than one province, so they add up to more than 89. A province view in the directory can also include other businesses listed there.

No matches — try a state name or agency keyword.