Mechanical graphics. An educational course on the theory and practice of mechanical drawing (1890)
Willson, Frederick Newton, 1855-1939 · Princeton, N.J., The Princeton Press · leaf 40
L b 16 isx Mo COVER PLATE ~17-H~ … Railrnad BridgePast CannBctinn Upper Clinrd, (In drawing llie above the student will make horizmtal, not slanting dividing lines in all fractions. Centre and dimension linos iii conlinuons red linos,unless for blue printing, in which case all lines will be black.) 17
Mechanical drawing · Lettering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
