They analyze engineering specifications and drawings; confers with quality, material, manufacturing and subcontractors to provide and obtain technical information; investigates reports of defective, damaged or malfunctioning parts, assemblies, equipment or systems; and reviews production schedules and orders. Researches, plans, designs and develops mechanical products and systems such as instruments, controls, robots, engines, machines and mechanical, thermal hydraulic or heat transfer systems for production, transmission, measurement, and use of energy.