Abstract
There is often difficulty in handling problems involving two- and three-dimensional geometrical constructions. The examples in this chapter are included in order to provide a background in solving engineering problems connected with lines, planes, and space. Copying a selection of these examples on the drawing board or on CAD equipment will certainly enable the reader to visualize and position the lines in space which form each part of a view, or the boundary, of a three-dimensional object. It is a necessary part of draughting to be able to justify every line and dimension which appears on a drawing correctly. In this chapter a rectangular box and a cylinder are used as worked examples of constructing auxiliary views and establishing true lengths.
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