Training in the use of Instructional/educational teaching apparatus and laboratory training aids, namely, electrified, fluid-powered, and/or non-powered demonstration panels having fully-operational models of motors, pumps, compressors, valves, programmable logic controllers, variable frequency drives, gears, chains, belts, electrical circuits, and automated machines; hydraulic, pneumatic and process control systems consisting of ammeters, oscilloscopes, pressure gauges, flow meters, pressure recorders, level indicators, pumps, and pneumatic and hydraulic directional control valves for use in automated machinery; and parts and components for all of the foregoing; printed instruction manuals sold therewith, used for providing exercises and simulation and teaching and educational purposes in the fields of electrical engineering, industrial control, fluid power technology, process control, mechanical engineering, thermal and HVAC engineering, heat transfer and steam technology, electronics engineering, advanced manufacturing processes, machining, oil and gas production, and safety practices