"The mechanical engineer is concerned with the generation and use of power, the design and development of a wide variety of products and machinery, and the operations and methods of manufacture. As such he engages in the design operation, and control of conventional and nuclear power plants. He designs and develops automobiles, engines, turbines, fluid machinery, production machinery, and equipment; heating, ventilating, air conditioning, refrigeration systems and equipment, appliances and other consumer goods."
January 1, 1970
https://en.wikiquote.org/wiki/Mechanical_engineering