3. Three views of an object are drawn below. 



(a) Is 1-2-3-4 ^^ opening or a raised part ? What are its dimensions ? 



(b) Answer the same two questions with respect to 5-6-7-8. 



(c) Answer the same two questions with respect to A-B-C-D. 



r--\ 

 ____^_^_ I I 



-^ S 6_ 



a 



The front view and the end view of a soHd are shown below. Copy these 



views and 



{a) Draw the top view. 



(6) Show the true shape of the section cut from the solid by a vertical plane 

 which intersects the axis of the solid at a point equidistant from the 

 ends of the soUd, and is inchned at 60° to that axis. 



[Solve either (c) or (6)] 



(fl) Draw two regular hexagons each 1^ inches on a side. Use a different 



method for each. One method must be that in which only the T-square, 



triangles, and scale are used. 

 (6) Draw the end view and the front view of a helix whose axis is horizontal. 



The diameter of the helix is 2 inches and the pilch is 3 inches. Sketch 



the curve neatly freehand after the necessary points have been accurately 



determined. 



86 



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