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 86
-U-L I I > • I■I I Fig. 164 F/g. 165 Fig. 166 to the elevation. The same practice is followed for holes andpins. The location of bolt holes is another illustration. Thefront view of Fig. 164 shows the true projection of the bolt holes.The front view of Fig. 165 shows the preferable method which … Fig i67
Mechanical drawing
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