A textbook on mechanical and electrical engineering (1902)
International Correspondence Schools · Scranton : International Textbook Co. · leaf 419
^ be easily distinguished from one another.When finishing these drawings on the plate, the variousfeatures are to be represented as follows: Represent the boundaries of figures and all visible partsof solids by light full lines. Hidden edges and hidden intersection lines should berepresented by… … JUNE 25. /393. Copyright, 1899, by THE CcAll right
