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
ter chapter isoften used. A good effect may sometimes be obtained by massshading with a soft pencil, using the dull side of the tracing cloth.For more particular work on paper, india ink tinting applied witha brush can be used. WORKING DRAWINGS 69 Exceptions to True Projection. — There are many… … -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
Mechanical drawing
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