Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 140
, the third figure a V may be compounded, by drawing the verticallines d h h i and a ^, c I to meet the plane d e, and by producing them hori-zontally till they meet and form the figure a V. Similarly, the figure V c may ORTHOGRAPHIC PROJECTION. 123 be deduced from the other two by the aid of the… … Fig. 254. Fig. 255. a plan, may afford a sufficiently complete idea of the construction of a machine.When parts are inclosed by others, views of the interior are required, in whichcase the machine is supposed to be cut across by planes, vertical, horizontal, orinclined, to reveal its structure.…
Mechanical drawing
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