June 8, 2021
Founded in 1920, Doble Engineering Company ensures reliable, safe and secure power for all. We do this by providing comprehensive diagnostics and engineering expertise for the energy industry.
Doble is part of the Utility Solutions Group of ESCO Technologies Inc. (NYSE: ESE) and serves customers around the globe. Our companies and product lines include Manta Test Systems, Morgan Schaffer, and Vanguard Instruments. Doble is an ISO 9001 & ISO/IEC 17025 & 17034 certified company.
Our HistoryExperience Now
An Interactive Timeline of our First 100 Years
Providing the most reliable & accurate online & portable DGA monitoring equipment, ISO-certified laboratory testing services, diagnostic software & the only commercially available gas-in-oil standards.About Morgan Schaffer
Rugged, reliable, accurate, and user friendly diagnostic test equipment that measures the health of critical substation equipment.About Vanguard
We provide the tools you need to test your protective relays & meters.About Manta Test Systems
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