Doble Engineering Company

What they make

• condition monitoring
• electrical test instruments
• high power test systems
• tests
• circuit breakers
• transformers
• cables
• overhead lines
• rotating machines
• insulating materials
• DC HIPOT/Insulation

NAMED ON THE COMPANY’S OWN WEBSITE, READ JUL 29, 2026

Where it is

Other plants nearby

Facility	City	Industry	Status	Distance
Device Technologies, INC	Southborough	Other Fabricated Wire Product Manufacturing 332618	● ACTIVE	3.5 KM
Carlstrom Pressed Metal Co, INC.	Westborough	Forging and Stamping 332116	● ACTIVE	9.8 KM
Donahue Industries, Incorporated	Shrewsbury	Metal Crown, Closure, and Other Metal Stamping (except Automotive) 332119	● ACTIVE	14.4 KM
SStarmet	Concord	Nonferrous Metal Foundries 331528	◇ UNVERIFIED	16.7 KM
WCWyman-gordon Company	North Grafton	Secondary Smelting, Refining, and Alloying of Nonferrous Metal (except Copper and Aluminum) 331492	● ACTIVE	17.7 KM

Every listed plant in Middlesex County

Also at this address

No other federal record shares this street address.

Where this record comes from

4 sources hold this plant, and 11 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.

EPA cross-references this facility in MA-EPICS, RCRAINFO, TRIS · EPA site type STATIONARY.

• The company’s own websiteOPERATING
  first seen JUL 2026 · last seen OCT 2026
• SAM.gov entity registrationOPERATING
  Record PNL1LJQ5G8H6 · first seen FEB 2026 · last seen OCT 2026
• OSHA injury and illness reportsOPERATING
  Record 677759 · first seen DEC 2025 · last seen DEC 2025
• EPA Facility Registry ServiceEXISTENCE
  Record 110000762844 · first seen DEC 2015 · last seen DEC 2015

IN MIDDLESEX COUNTY11 other plants share this one’s industry (Forging and Stamping, NAICS 3321); 5 of them have a size band on record.

What each source says

Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Name

EPA: DOBLE ENGINEERING COMPANY · JUL 2026 · ON THIS PAGE

SAM.gov: DOBLE ENGINEERING COMPANY · ON THIS PAGE

Street address

EPA: 123 FELTON ST. · JUL 2026 · ON THIS PAGE

SAM.gov: 123 FELTON ST · ON THIS PAGE

City

EPA: MARLBOROUGH · JUL 2026 · ON THIS PAGE

SAM.gov: MARLBOROUGH · ON THIS PAGE

State

EPA: MA · JUL 2026 · ON THIS PAGE

SAM.gov: MA · ON THIS PAGE

County (FIPS code)

EPA: 25017 · SEP 2026

Coordinates

EPA: 42.34495,-71.5776 · JUL 2026

Employees (band)

OSHA: 100-499 · DEC 2025

Website

SAM.gov: http://www.doble.com/

CAGE code

SAM.gov: 94856

SAM registration expires

SAM.gov: 2027-02-12

State business registrationSOURCES DISAGREE

AK Corporations: DOBLE ENGINEERING COMPANY, registered with the Alaska Division of Corporations, Business and Professional Licensing; Corporation formed in Massachusetts; registered 1988-11-28; active · NOV 1988

CO SOS: DOBLE ENGINEERING COMPANY, registered with the Colorado Secretary of State; Corporation formed in Massachusetts; registered 1988-12-12; active, annual report filed 2026-02-08 · FEB 2026

Sunbiz: DOBLE ENGINEERING COMPANY, registered with the Florida Department of State, Division of Corporations; Corporation formed in Massachusetts; registered 1989-06-01; active, annual report filed 2026-03-09 · MAR 2026

MS SOS: DOBLE ENGINEERING COMPANY, registered with the Mississippi Secretary of State; Corporation; registered 1988-10-27; active · OCT 1988

OR SOS: DOBLE ENGINEERING COMPANY, registered with the Oregon Secretary of State, Corporation Division; Corporation formed in Massachusetts; registered 1989-01-27; active · JAN 1989