MyDoble / Portal Login EN SEARCH PRODUCTS SOLUTIONS SERVICES TRAINING ABOUT EVENTS Blog Videos Downloads Support Contact Us Careers ABOUT DOBLE ENGINEERING COMPANY Engineering Expertise and Advanced Diagnostics to Help Ensure All People Have Reliable, Safe and Secure Energy A CENTURY OF HELPING CLIENTS IN THE ELECTRIC POWER INDUSTRY 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 History Experience Now An Interactive Timeline of our First 100 Years 100 Years of Doble: Centennial Video Watch our video to learn about Doble’s legacy and get a sneak peek of what the next 100 years may hold. WATCH VIDEO Recent Doble Acquisitions ACCURACY BY DESIGN 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 PRODUCTS Condition Monitoring Enterprise Asset Management In-Service Testing & Assessment Oil Standards Off-line Testing & Assessment Protection Testing Security & Compliance SOLUTIONS Transformers Bushings Protective Relays Circuit Breakers Rotating Machines Cables SERVICES Client Services Consulting & Testing Services Laboratory Services Equipment Rentals Doble Resource Library SUPPORT Overview Downloads Trouble & Failure Reporting Form ABOUT Discover Doble Leadership Team News Careers Contact Us Quality Commitment EVENTS Doble Events Training Industry Events Webinars Earning CEUs Doble is an ESCO Technologies Company Doble is an ISO 9001 & ISO/IEC 17025 & 17034 Certified Company. © 2021 Doble Engineering Company. All Rights Reserved. Privacy Policy & Legal Disclosures.