Municipal sealer portal
The sealer network
351 Massachusetts cities and towns coordinate weights & measures work through DOS. Sealers test scales, pumps, and scanners; the Division trains, certifies, and supports them.
188
Certified sealers
22
New sealers in 2023
209,896
Devices tested (sealers)
2,874
2023 sealer inspections
5 municipalities haven't filed their 2023 Sealer Annual Report
Boxborough, Dedham, Mansfield, Milton, Seekonk. Sealers in these towns should file immediately to remain in compliance with M.G.L. c. 98 § 37.
Statewide sealer coverage
Sealer directory
24 of 188 certified sealers
Boston
Frank Chin
Appointed 2016 · 11,482 devices in service
Large capacity scalesMotor fuelPrice verification
Worcester
Maria Delgado
Appointed 2019 · 4,211 devices in service
Small scalesMotor fuelUnit pricing
Springfield
Kevin O'Brien
Appointed 2014 · 3,804 devices in service
Vehicle tank metersPropane
Lowell
Linh Nguyen
Appointed 2022 · 2,168 devices in service
Small scalesScanner waiver
Cambridge
Alicia Bernard
Appointed 2018 · 2,942 devices in service
Small scalesScanner waiverUnit pricing
Quincy
Robert Caruso
Appointed 2010 · 1,841 devices in service
Large capacity scalesMotor fuel
Newton
Priya Ramanathan
Appointed 2020 · 1,562 devices in service
Small scalesPrice verification
Salem
Thomas DiNapoli
Appointed 2015 · 1,197 devices in service
Motor fuelUnit pricing
Pittsfield
Ellen Wozniak
Appointed 2012 · 987 devices in service
Small scalesPropane
Barnstable
Nathan Welles
Appointed 2019 · 1,133 devices in service
Motor fuelSmall scales
Provincetown
Margaret Delano
Appointed 2021 · 142 devices in service
Transient vendor inspections
Framingham
Paul Rossi
Appointed 2017 · 2,418 devices in service
Large capacity scalesScanner waiver
Amherst
Sarah Beaulieu
Appointed 2023 · 612 devices in service
Small scales
Plymouth
Alan O'Donnell
Appointed 2011 · 1,482 devices in service
Motor fuelMarine measures
Lawrence
Yésica Peña
Appointed 2018 · 1,741 devices in service
Small scalesPrice verification
Brookline
David Mackenzie
Appointed 2013 · 1,328 devices in service
Unit pricingScanner waiver
Revere
Bruno Alves
Appointed 2020 · 1,091 devices in service
Motor fuelSmall scales
Somerville
Jane Fitzgerald
Appointed 2019 · 1,672 devices in service
Small scalesPrice verification
Northampton
Carlos Mendoza
Appointed 2022 · 834 devices in service
Small scalesMotor fuel
Boxborough
— pending appointment —
Dedham
— pending appointment —
Mansfield
— pending appointment —
Milton
— pending appointment —
Seekonk
— pending appointment —
Sealer Certification
Written + field examination administered twice yearly. 22 new sealers certified in 2023.
Open
Metrology Lab calibration
Schedule your weight-kit calibration. Echelon III, NIST-certified. Typical 10-day turnaround.
Open
Handbook 44 & Handbook 130
Current NIST reference handbooks for weights & measures inspections.
Open
Standing Advisory Committee
The Commissioner-chaired Standing Advisory Committee is made up of designees from the Massachusetts Weights & Measures Association, the Eastern and Western regional associations, and the City of Boston's Department of Inspectional Services. It sets certification standards and continuing-education requirements for sealers and deputy sealers.
Committee agendas & minutes