A textbook on mechanical and electrical engineering (1902)
International Correspondence Schools · Scranton : International Textbook Co. · leaf 441
d a O need be inked in on the drawing. These lines areto be further indicated by means of the small arrowheads(as in the case of parallel solids) illustrated on the platein Fig. 1. This completes the development. PROBLEM 11 40. To develop tlie surfaces of a quadrangularpyramid. Construction.—This… … J^AE 25, J893. Copyright. 1899, by The Cc,All right
