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 154
^/>. S^9 fig. 330 … Fig, 331 F/g. 332 and left hand corner of the sheet at an angle of 45°, and to lie inthe plane of the paper. The lower and right hand edges wherethe Hght passes over them are made heavy lines called shadelines. When two surfaces are in the same plane the line of divisionbetween them is not shaded,…
Mechanical drawing
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