Practical problems in mechanical drawing and blueprint reading (1921)
Sturtevant, Walter W. [from old catalog] · Minneapolis, Minn. : Practical problems co. · leaf 33
ction takes more time and therefore costsmore than the drawing of a side view, andshould be used only when the added clearnessgained will warrant the -extra time necessaryin the drafting room. Solid cylindrical objects, like bolts or shafts,are not drawn in section. Removed sections are sections… … VALVE STEM PACKING 32
Blueprints · Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
