Leeds, Charles Carley, 1870- [from old catalog] · New York, D. Van Nostrand company · leaf 28
2nd. Horizontal lines Dimension tines 4^fh. Angular lines Projection lines … e^r^d pt 5fh. Projection and Dimension lines^ Dimensions— NotesFig. 16. mind that to get blue-prints with clear white lines, it is necessarythe lines of the tracing be fairly hea\y; not the tine, prettythat beginners are so prone to use. thatlines The illustration shows the various steps in making…
Mechanical drawing
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