Elementary projection drawing. Theory and practice. For preparatory and higher scientific schools, industrial and normal classes; and the self-instruction of teachers, inventors, draftsmen, and artisans. In six divisions .. (1880)
Warren, S. Edward (Samuel Edward), 1831-1909 · New York, J. Wiley & sons · leaf 96
CONSTRUCTIONS IN WOOD. 49 § V. —Pairs of Timbers which are framed together obliquely tc each other. Example 1. A Chord and Principal. (From a Model.) PI.VIIL, Fig. 59. Mechanical Construction.—The oblique piece( principal) is, as the two elevations together show, of equalwidth with the horizontal…
Geometrical drawing · Mechanical drawing
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