A textbook on mechanical and electrical engineering (1902)
International Correspondence Schools · Scranton : International Textbook Co. · leaf 298
ject three vie^vs of an octagonal sur-face, reiDresenting it in a liorlzontal position. The three views consist of a plan, front, and side eleva-tion. A perspective view of the surface in the requiredposition is shown in Fig. 15. §15 PRACTICAL PROJECTION 39 ExPLAXATiON.—All lines used to define… … Fig.15 This principle also applies to any view of a plane surface inAvhich all its lines are at right angles to the lines of sight.The plan of the surface, then, will be a true octagon, andmay be drawn on the plate with lines tangent to a circle1^ inches in diameter, using the T square and 45°…
