Abstract
The basic method for finding the true length of a straight line is best illustrated by reference to the projections of a square pyramid. Figure 5.1 shows two views of a square pyramid with one sloping edge emphasised by a heavy line. If the pyramid is rotated through 45° about its vertical axis, then the elevation shown in figure 5.2 gives the true length of the edge in question.
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© 1981 K. Simms
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Simms, K. (1981). Sections, Intersections and Developments. In: Graphic Communication for Technical Design. Palgrave, London. https://doi.org/10.1007/978-1-349-05536-4_5
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DOI: https://doi.org/10.1007/978-1-349-05536-4_5
Publisher Name: Palgrave, London
Print ISBN: 978-0-333-29181-8
Online ISBN: 978-1-349-05536-4
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