A textbook on mechanical and electrical engineering (1902)
International Correspondence Schools · Scranton : International Textbook Co. · leaf 406
the points K and Lapproach C in the plan in their distances from B and D,respectively; according to the foregoing instruction, it isnecessary to define them in a position in the developmentcorresponding to that represented on the solid. §16 DEVELOPMENT OF SURFACES 23 Parallel lines must be produced… … Fig. 17 necessary to bend the surfaces of thepattern on such lines, they are distin-guished from the regular edge lines bythe term intcrcdtrc Hues. Interedge linesare as essential in determining the out-line of a development as the edge linesthemselves, and are to be distinguished on the drawings…
