Practical engineering drawing and third angle projection, for students in scientific, technical and manual training schools and for ... draughtsmen .. (1897)
Willson, Frederick Newton, 1855-1939 · Princeton, N.J., The author · leaf 29
esenting the limit of the same flat surface, the right-hand line is the heavier if the pairis vertical, but the lower if they run horizontally; alwayssubject, however, to the proviso that the line of inter-section of two illumin-ated planes is never ashade line. 68. The conic sectioncalled the… … SECTION-LINING. —LIJ^E-SHA DING. 23 ^ig-. 3S- be omitted, being given here merely to show the law of construction. All the divisions are equal,and like numbers are joined. Some interesting mathematical properties of the curve will be found in Chapter V. 69. A pleasing design that will test the…
Mechanical drawing · Lettering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
