Doble Engineering Company
Marlborough, United States
Specialist diagnostics firm for the electric power industry offering an Insulating Materials Laboratory and dielectric/insulation testing services on apparatus rated up to 15 kV, plus regional labs in Indiana, North Carolina, and Texas.
- Headquarters
- Marlborough, United States
- Founded
- 1920
- Website
- www.doble.com
- Legal name
- Doble Engineering Company
- Employees
- 501-1,000 employees (LinkedIn company-size band)
Geographic coverage
- United States (headquartered in Marlborough, Massachusetts); Doble's own About page additionally states it "serves customers around the globe" as part of ESCO Technologies' Utility Solutions Group, so this entry likely understates actual reach
Notable facts
- Founded by Frank C. Doble in 1920, originating from a portable insulation test for transformer bushings
- Now part of the Utility Solutions Group of ESCO Technologies Inc. (NYSE: ESE)
Verified credentials
✓ = confirmed on the accrediting body's own public registry. (unverified) = the provider's own claim, not independently confirmed in a registry. Never take a certification claim at face value; verify directly with the issuing body before you retain a vendor. See methodology.
Service categories
Sources. This profile is compiled from public reference data, WebSearch-verified againstsource 1 · source 2 · source 3. Data as of 2026-07-11. See methodology.
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