This series covers two-grade interval positions that supervise, lead, or perform administrative work that involves collecting, analyzing, interpreting, and developing specialized information about equipment. Work also involves providing advisory services to those who design, test, produce, procure, supply, operate, repair, or dispose of equipment. Work may also involve developing or revising equipment maintenance programs. The work requires applying an intensive and practical knowledge of the characteristics, properties, and uses of equipment. Knowledge is of the type gained from technical training, education, and experience in functions such as repairing, overhauling, maintaining, constructing, or inspecting equipment.