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 30
keys, and similar small parts are oftengiven a number, which is used to designate them. The applica-tion and uses of lists are so varied that they must be learned forthe company where one is employed. A material list is shownin Fig. 23. CHAPTER IIICONSTRUCTIONS Essential Constructions. — Geometry… … Para//e/ Lines
Mechanical drawing
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