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IED Technical Sketching and Drawing
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Terms in this set (48)
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
1. The documents that are required for something or that give evidence or proof of something. 2. 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
1. A long thin mark on a surface. 2. A continuous extent of length, straight or curved, without breadth or thickness; the trace of a moving point. 3. Long, narrow mark or band.
Line Conventions
Standardization of lines used on technical drawings by line weight and style.
Line Weight
Also called line width. 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.
Multi-View Drawing
A drawing which contains views of an object projected onto two or more orthographic planes.
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
1. The relationship of one thing to another in size, amount, etc. 2. Size or weight relationships among structures or among elements in a single structure.
Scale
1. A straight-edged strip of rigid material marked at regular intervals that is used to measure distances. 2. 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, in contrast to three-dimensional form.
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 vanishing point is 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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