Machine drawing; a text and problem book for technical students and draftsmen (1921)
Svensen, Carl L. (Carl Lars), 1884- · New York, D. Van Nostrand company · leaf 28
Fig. 33. Thread Representations. Fig. 34. Where a hole does not go all the way through a piece, the angle of theend of the drill leaves the end of the hole pointed, drawn with 30° linesas shown in Fig. 34. TABLE 1 Dimensions of U. S. Standard Threads Diameter Threads Diameter Root Root per Inch of…
Machinery
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