Rhode Island Scale Certification & Weights and Measures

In Rhode Island, day-to-day scale inspection is handled at the county or local level, with the state agency setting standards and providing oversight. If you operate a commercial scale in Rhode Island — 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 Rhode Island?

Municipally appointed sealers of weights and measures - trained, certified and overseen by DLT's Weights and Measures Section - inspect and calibrate commercial scales, gas pumps and other devices; DLT publishes the licensed sealer assigned to each of the 39 cities/towns and can assign certified sealers to municipalities without an active one. Owners contact their municipality's listed sealer or DLT at (401) 462-8570 option 6.

What Rhode Island requires of scale owners

Businesses must have commercial devices tested and sealed by the certified sealer serving their city/town, paying the sealer's statutory testing/sealing fees (R.I. Gen. Laws chs. 47-1, 47-2; 260-RICR-30-10-3); fuel/oil delivery truck meters must be tested and sealed at least annually and tank capacities every 3 years. There is no state device-registration portal; DLT separately licenses petroleum/oil dealers and certifies dealers/repairmen to test and seal fuel trucks.

Getting a scale into service — 4 steps

1. Buy a legal-for-trade (NTEP-certified) scale appropriate for your application and capacity.
2. Contact your county or local Weights & Measures office to confirm registration, fees, and inspection scheduling (state program: Rhode Island Department of Labor and Training, (401) 462-8570, option 6).
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