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 228
GEAKING. 137 compound helical motion are uniform, divide the circles AE andAC and the pitch 0,12 all into the same number of equal parts,here 12, and draw horizontal lines through the points of divisionon 0,12. Then for an outer helix, project C at 0; 1 on the firsthorizontal above it; 2 on the…
Geometrical drawing · Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
