A textbook on mechanical and electrical engineering (1902)
International Correspondence Schools · Scranton : International Textbook Co. · leaf 281
are given for thedrawing of Case I on the plate, but the student is expectedto be able to make the drawings for Cases II and III with-out further directions than those contained in the illustra-tions. Be careful to preserve a distance of \ inch betweenthe drawings, so that the plate may present a… … Fig. 5merely an extension of Problem 1. Each end of the lineis treated as a point, projected first to the plan and after-wards to the elevation in precisely the same manner as wasthe point in Problem 1, the only difference being that thereare two points instead of one, for we cannot have a…