Essentials of drafting; a text and problem book for apprentice, trade and evening technical schools (1918)
Svensen, Carl L. (Carl Lars), 1884- · New York, D. Van Nostrand company · leaf 140
through e and perpendicular to the axiswould give the section indicated by section lines in the end view. CHAPTER XVIIDEVELOPMENTS Surfaces. — Surfaces may be divided into two classes, planesurfaces and curved surfaces. Plane surfaces show in their truesize and shape when they are parallel to one… … r/g. ^96 object on the paper and then turning it until each face has touchedthe paper. This is shown in Fig. 296 where the paper has beencut so it will exactly cover the object when it is folded about it.Such an outline is called a development. A curved surface doesnot show in its true size no…
Mechanical drawing
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