ESCO Technologies Inc sells engineered products and systems for utility, industrial, aerospace, and commercial applications. The firm operates in three segments: Aerospace and Defense, Utility Solutions Group (USG) and RF Shielding and Test (Test). The Aerospace and Defense segment designs and manufactures specialty filtration and naval products. The USG segment provides diagnostic testing solutions. The Test segment provides its customers with the ability to identify, measure and contain magnetic, electromagnetic and acoustic energy.