Indiana Scale Certification & Weights and Measures

Indiana uses a combined model: state inspectors cover much of the state, while county or city sealers handle inspections in their own jurisdictions. If you operate a commercial scale in Indiana — at a warehouse, farm, recycling yard, retail store, or truck stop — here is who regulates it, what the law requires, and exactly who to contact.

Who inspects commercial scales in Indiana?

Hybrid state-local program under IC 24-6-3: IDOH state inspectors test devices and train city and county inspectors, while many counties/cities employ their own weights and measures inspectors who act as deputies of the state division within their jurisdiction (IDOH publishes an 'Inspectors by Jurisdiction' list). Owners contact IDOH or their local county/city W&M office depending on location.

What Indiana requires of scale owners

Scales are not registered/licensed with the state; the state or local W&M inspector for the jurisdiction inspects and tests commercial devices (local inspectors check devices in their jurisdiction at least once a year), and Placed in Service reports for new/repaired scale devices are filed with IDOH. Motor fuel outlets must register annually with IDOH; a Certified Weighmaster appointment is available for issuing official weight certificates.

Getting a scale into service — 4 steps

1. Buy a legal-for-trade (NTEP-certified) scale appropriate for your application and capacity.
2. Confirm your jurisdiction — call the state program at (317) 356-7078, Option 3 to learn whether a state inspector or your county/city sealer covers your location.
3. Arrange compliant installation and calibration. Where required, placing-in-service must be done by a licensed or registered service company.
4. Stay compliant. Pass required inspections, keep calibration current, retain service records.

Common questions