e point so established draw the line B f. Now the space on the arc k between the lines B e and B fdefines the angular extent of the locking face. With the dividersset at 5 and one leg resting at the point r, we sweep the shortarc /, and from the intersection of said arc with the line A c wedraw the… … iji Fig. 23 From the intersection of the line B e with the arc i we layoff two and a half degrees on said arc, and through the point soestablished we draw the line B g. The intersection of this line withthe arc k we name the point z. With one leg of our dividers setat A we sweep the arc / so it…
Clocks and watches
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