Abstract
This chapter focuses on the drawing. The aim of an engineering drawing is to indicate as clearly and simply as possible all the details and dimensions of an object. For this purpose, three views are usually required—the front elevation, the plan, and the end elevation. In the first-angle method, the views are drawn on the opposite side from which they are projected. The plan, viewed from above, is projected and drawn below the front elevation; the end elevation is drawn on the opposite side of the front elevation from which it is viewed. In the third-angle method, the views are drawn on the same side from which they are seen. The plan viewed from above is drawn above the front elevation; the end elevation is drawn on the same side of the front elevation from which it is viewed. Sectional views are sometimes necessary to show hidden internal details. After setting out the position of each view, the center lines and all circles and main arcs are first drawn. The views are then carried forward together.
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