Mechanical drawing : a manual for teachers and students (1902)
Cross, Anson Kent · Boston : Ginn & Co. · leaf 42
drawings also show a vertical line 1-2, and its views upon thetwo slates. WORKING DRAWINGS. 33 27. It often happens that these two views are not enough to de-scribe an object. Thus, if the cube is bisected to form two triangu-lar blocks, the views of either triangular block upon the vertical…
Mechanical drawing
Internet Archive · Boston Public Library · Public Domain Mark 1.0. Free to use for anything.
