s 



BULLETIN 527, U. S. DEPARTMENT OF AGRICULTURE. 



figure 19 is shown the working drawing of the nail box described and 

 illustrated in Exercise l,with the front, top, and end views, looked 

 at in the directions of A, B, and 0, drawn out and shown in heavy 

 lines to illustrate how they are obtained. In the working drawing of 

 figure 18, these views are shown laid out flat. Solid lines in working 















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J 









\ 



J <3 M M *4 



ror wfw 



rm/vrv/EW bvpwew 



Fig. 18.— Nail box. 



drawings show the front edges of the boards; those that can be seen. 

 Dotted linos indicate the edges of boards that can not be seen, be- 

 cause of boards in front of them. 



In some of the exercises all three kinds of drawings are shown. In 

 others only the perspective drawing is shown, as it in itself will show 

 how to make the article. 



