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jain_chap3_Summer08

# jain_chap3_Summer08 - III Pictorials A pictorial is an...

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III. Pictorials III. Pictorials A pictorial is an effective means of communicating an idea. Pictorials are especially helpful if a design is unique or the person to whom it is being explained has difficulty interpreting multiview drawings. Pictorials, sometimes called technical illustrations , are widely used to describe various products in catalogs, parts manuals, and maintenance publications.

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Pictorial Line Functions
3.1. Three Types of Pictorial Sketches

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Types of projection systems for pictorial square6 Isometric (a special case of Axonometric) pictorial: box2 Isometric pictorials (isometrics) are formed by parallel projectors perpendicular to the picture plane (or drawing plane). square6 Dimetric, Trimetric square6 Oblique pictorial: box2 Oblique pictorials ( obliques ) are formed by parallel projectors oblique to the picture plane. square6 Perspective pictorial: box2 Perspective pictorials ( perspectives ) are formed by converging projectors that make varying angles with the picture plane. square6 One-Point, Two-Point, Three-Point
Types of projection systems for pictorial

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3.2. Oblique Pictorial Sketches An oblique projection can be drawn at any angle of sight to obtain an oblique pictorial. However, the line of sight should not make an angle less than 45 o with the picture plane. This would result in receding axis too much longer than true length, thereby distorting the pictorial.
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jain_chap3_Summer08 - III Pictorials A pictorial is an...

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