Glossary, Continued
E (Continued)
EN—A measure of type equal to one half of an EM.
ENCRUSTING—Taking a video image and wrapping it around an image of
an object.
ENGINEERING DRAWING—An orthographic drawing of a piece of
equipment or of its detailed parts containing information and instructions
sufficient for manufacture.
ENGINEER'S SCALE—A scale used whenever dimensions are in feet and
decimal parts of a foot, or when a scale ratio is a multiple of 10.
ERASING SHIELD—A small, thin spring metal plate with variously sized
and shaped openings used to protect the surrounding area of a drawing while
erasing in an adjacent area.
ESSENTIAL AREA—The part of a picture that contains all of the title or
lettering intended for viewer consumption and often corresponding with the
safe title area.
EQUILATERAL—Equal angles and equal sides.
EXPLODED VIEW—A pictorial view of a device in a state of disassembly,
showing the appearance and interrelationship of parts.
EXPOSURE INDEX—The degree of light sensitivity of film.
EXPORT—The transfer of files to another software application.
EXTENSION BAR—A leg extension to a standard compass, which expands
the diameter of a circle that the compass is able to draw.
EXTENSION LINE—A line used to indicate the extent of a dimension.
EYE LEVEL—Also called HORIZON LINE. The horizontal plane at the
artist’s eye level to which that person relates linear perspective.
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