SUPPLEMENTARY PROJECTS 



259 



with apex (a, Fig. 299). (See pattern, Fig. 290.) Note radii 

 distances lettered similarly in Figs. 298 and 299. Begin at b 

 [^5 ^ 3 L -UL- (Fig. 299) and meas- 



ure the distance hb 

 six times in each di- 

 rection. This will lo- 

 cate points g and g. 

 Draw lines ag and ag, 

 and extend both to d. 

 Also extend ab to c. 

 To secure the arc 

 thru c (Fig. 299), con- 



nect points c and d 

 and erect perpendicu- 

 lar to this line at center point e to intersect line ac at /. Use / 

 as a center and draw arc dcd. Angles between radii ad and 



FIG. 298. A measure. 



ac, ac and ad, reading from left to right in Fig. 299, are 

 equal. 



4) Make short and nar- 

 row V-cuts with snips in 

 lap surface on lower edge 

 of pattern for rim. Bend 

 this lap to fit into top of 

 body of measure. Bend 

 end laps, form rim and 

 solder to top of measure 

 body after soldering rim- 

 seam at d. FlG. 299. Details for measure. 



5) Place bottom in position on body, pound firmly in con- 

 tact with body over end of cylindrical stick and solder seam. 



