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HANDBOOK OF PHOTOGRAPHY 









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Fig. 14A. — Structure of lead-antimony cable sheath which has seen long service. Note 

 the widened grain boundaries and mottled grain. (Magnification, 200 X.) 



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Fig. 14B.— Same as Fig. 14A but at a magnification of 2450 X to reveal details of inter- 

 granular structure. 



