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IED Unit 2 Key Terms
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Terms in this set (50)
Cabinet Pictorial
Oblique pictorial where depth is represented as half scale compared to the height and width scale
Cavalier Pictorial
Oblique pictorial where height, width, and depth are represented at full scale
Center Line
A line which defines the center of arcs, circles, or symmetrical parts
Construction Line
Lightly drawn lines to guide drawing other lines and shapes
Depth
The measurement associated with an object's front-to-back dimension or extent of something from side to side
Dimension
A measurable extent, such as the three principal dimensions of an object is width, height, and depth
Dimension Line
A line which represents distance
Documentation
Drawings or printed information that contain instructions for assembling, installing, operating, and servicing
Drawing
A formal graphical representation of an object containing information based on the drawing type
Edge
The line along which two surfaces of a solid meet
Ellipse
A regular oval shape, traced by a point moving in a plane so that the sum of its distances from two other points is constant, or resulting when a cone is cut by an oblique plane which does not intersect the base
Extension Line
Line which represents where a dimension starts and stops
Freehand
Sketching which is done manually without the aid of instruments such as rulers
Grid
A network of lines that cross each other to form a series of squares or rectangles
Height
The measurement associated with an object's top-to-bottom dimension
Hidden Line
A line type that represents an edge that is not directly visible
Isometric Sketch
A form of pictorial sketch in which all three drawing axes form equal angles of 120 degrees with the plane of projection
Leader Line
Line which indicates dimensions of arcs, circles and detail
Line
A long thin mark on a surface
Line Conventions
Standardization of lines used on technical drawings by line weight and style.
Line Weight
The thickness of a line, characterized as thick or thin
Long-Break Line
A line which indicates that a very long objects with uniform detail is drawn foreshortened
Manufacture
To make something, especially on a large scale using machinery
Measurement
The process of using dimensions, quantity, or capacity by comparison with a standard in order to mark off, apportion, lay out, or establish dimensions
Multi-View Drawing
A drawing which contains views of an object projected onto two or more orthographic planes
Object Line
A heavy solid line used on a drawing to represent the outline of an object
Oblique Sketch
A form of pictorial in which an object is represented as true width and height, but the depth can be any size and drawn at any angle
Orthographic Projection
A method of representing three-dimensional objects on a plane having only length and breadth. Also referred to as Right Angle Projection
Perspective Sketch
A form of pictorial sketch in which vanishing points are used to provide the depth and distortion that is seen with the human eye
Pictorial Sketch
A sketch that shows an object's height, width, and depth in a single view
Plane
A flat surface on which a straight line joining any two points would wholly lie
Point
A location in space
Profile
An outline of an object when viewed from one side
Projection Line
An imaginary line that is used to locate or project the corners, edges, and features of a three-dimensional object onto an imaginary two-dimensional surface
Projection Plane
An imaginary surface between the object and the observer on which the view of the object is projected and drawn
Proportion
The relationship of one thing to another in size, amount, etc
Scale
A proportion between two sets of dimensions used to develop accurate, larger or smaller prototypes, or models
Section Lines
Thin lines used in a section view to indicate where the cutting plane line has cut through material
Shading
The representation of light and shade on a sketch or map
Short-Break Line
Line which shows where part is broken to reveal detail behind the part or to shorten a long continuous part
Shape
A two-dimensional contour that characterizes an object or area
Sketch
A rough representation of the main features of an object or scene and often made as a preliminary study
Solid
A three-dimensional body or geometric figure
Technical Working Drawing
A drawing that is used to show the material, size, and shape of a product for manufacturing purposes
Three-Dimensional
Having the dimensions of height, width, and depth
Tone
The general effect of color or of light and shade in a picture
Two-Dimensional
Having the dimensions of height and width, height and depth, or width and depth only
Vanishing Point
A point in space, usually located on the horizon, where parallel edges of an object appear to converge
View
Colloquial term for views of an object projected onto two or more orthographic planes in a multi-view drawing
Width
The measurement associated with an object's side-to-side dimension
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