Mechanical drawing : a manual for teachers and students (1902)
Cross, Anson Kent · Boston : Ginn & Co. · leaf 85
Fig. 26. Fig. 27. Fig. 27 represents the planes and their respective views when thetop and side planes have been revolved into the plane of the frontplane. The base of the pyramid is at right angles to the front plane,upon which it is projected as a horizontal line 1^-2^; it is parallel tothe top…
Mechanical drawing
Internet Archive · Boston Public Library · Public Domain Mark 1.0. Free to use for anything.
