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Doble Engineering has announced its acquisition of California-based Vanguard Instruments.

Founded in 1991 and located in Ontario, California, Vanguard Instruments offers a wide range of diagnostic test equipment that accurately and efficiently measures the health of critical substation equipment, such as transformers, circuit breakers, and protective relays.

"Our goal is to provide our customers with the resources and knowledge they need to perform their jobs accurately, safely, and...