A textbook on mechanical and electrical engineering (1902)
International Correspondence Schools · Scranton : International Textbook Co. · leaf 263
view from beneath, or looking up at the object; thus wehave the terms top plan and bottom plan. The two views § 15 PRACTICAL PROJECTION 9 thus obtained are frequently desio-nated by terms that varywith the chiss of objects represented and not infrequentlyderive their names from some portion of the…
