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Vanguard Instruments

A subsidiary of Doble Engineering Company, Vanguard Instruments was founded in 1991 in Ontario, California and became an expert in diagnostic solutions and substation testing. They were acquired by Doble in 2017 for their innovative, rugged equipment which supports circuit breaker analysis and other critical electrical infrastructure testing.

ATEC has Vanguard Instrument rentals for transformer turns ratio (TTR) testers, digital low resistance ohmmeters (DLRO), winding resistance meters, and more.