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Chapter 8 Pictorial drawing: Isometric and oblique parallel projection
After studying this chapter and working through the problems you should be able to do the following: produce isometric and oblique pictorial drawings from orthogonal views select the best viewing direction when making a pictorial drawing understand the relationship between two- and three-dimensional drawings
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Figure 8.1 – Foreshortening of cube edges
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Figure 8.2 – Concept of isometric axes
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Figure 8.3 – Making an isometric scale
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Figure 8.4 – Selection of isometric axes
(d) (a) (b) (c) (e) (f) (g) (h) (i) (j)
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Figure 8.5 – Isometric circles—ordinate method
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Figure 8.6 – Isometric circles—four-centre method
(b) half circles (c) quarter circles (a) full circles
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Figure 8.7 – Isometric curves
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Figure 8.8 – Isometric angles and non-isometric lines
(a) isometric angles (b) non-isometric lines
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Figure 8.9 – Making an isometric drawing
(b) (e) (c) (f)
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Figure 8.10 – Pictorial representation of fillets and rounds
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Figure 8.11 – Pictorial representation of threads
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Figure 8.12 – Pictorial representation of sections
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Figure 8.13 – Dimensioning pictorial views
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Figure 8.14 – Oblique parallel projection
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Figure 8.15 – Length of depth lines in oblique parallel projection
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Figure 8.16 – Irregular face parallel to picture plane
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Figure 8.17 – Longest dimension parallel to picture plane
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Figure 8.18 – Preferred pictorial view
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Figure 8.19 – Oblique circles
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Figure 8.20 – Oblique angles
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Figure 8.21 – Selection of oblique axes
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