Now in 110 countries, Doble Engineering Company has been helping clients in the electric power industry improve operations and optimize system performance for nearly a century. Doble Engineering Company offers diagnostic instruments, services, and the world's premier library of statistically significant apparatus test results for the benefit of energy generation and delivery companies and industrial power users worldwide. Doble Engineering Company was acquired by ESCO Technologies Inc. (NYSE: ESE) in 2007. Doble continues to be operated as a stand-alone company.

Doble offers a comprehensive and extensive scope of diagnostic products and services to test and maintain transformers, bushings, protective relays, circuit breakers, rotating machines and more. With more than 400 employees and 5500 customers, offices in eleven countries, and 55 million points of test data for more than 1 million different electric apparatus, Doble is dedicated to helping the global power industry overcome its challenges, no matter how big or how small.

Doble Engineering Company supports our clients in the electric power industry improve operations and optimize system performance. Check relay schemes, evaluate insulation condition and assess risk across your transformer fleet with Doble diagnostic test equipment and software. Doble products are recognized for durability and our analytical software is backed by nearly a century of knowledge on asset condition. We build our solutions with you in mind, focusing on safety, efficiency and accuracy.