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 112
CONSTRUCTIONS IN METAL. 61 Rolled iron in its elementary commercial forms, for architec-tural and engineering purposes, is principally known as beam,angle, T (Fig. 1), V (Fig. 2), and channel iron, the latter
Geometrical drawing · Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
