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 41
nzon/-a/P/ane af/er /^x/s f/crne … Projecf/orrL/ne ■^\_Pn)Jec/-/on L/ne F/g. S9 ing through the glass, we consider that Hnes have been drawnfrom every point in the object perpendicular to the verticalplane, the object is said to be projected out to the verticalplane. The lines are- called projection lines. By joining the PROJECTIONS…
Mechanical drawing
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