Drawing, Cross Section.—A drawing of an object as though it had been cut in two in order to show its inside construction.
Drawing, Detail.—A drawing of any part of a device or a machine made large enough to show everything no matter how small.
Drawing, Perspective.—A drawing of a solid object on a flat surface so that it seems to stand out in space like the object itself.
Drawing, Isometric perspective.—See [Isometric Perspective].
Du Ponts.—A firm at Wilmington, Delaware, who manufactures gun-powder and other explosives.
Efficient.—That which works the best with the greatest economy.
Element.—(1) A chemical element is a form of matter which cannot be decomposed. (2) A mechanical element is a single part of a device or a machine.
Electrolytic.—The decomposition of a chemical compound by an electric current.
Electroplating.—Depositing one metal on another metal by an electric current.