Mechanical drawing : a manual for teachers and students (1902)
Cross, Anson Kent · Boston : Ginn & Co. · leaf 138
ill be under 2, and on the level of2P, and the distance 2-iP must be the real length of the edge 1-2. Point 3,in 1-2, also describes an arc in the top view, but it is not necessary to drawthe arc, as y^ must be in 1F-2 and on the level oi 3^. The distance 1^-3is the real distance from the vertex to… … 2
Mechanical drawing
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