12th August 1915, Page 12
12th August 1915
Page 12

Page 12, 12th August 1915
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The Wheels Of Industry.
This journal, dealing as it does with the "Chariots of War," no less than with the "Wheels of Industry," continues of national importance. Its interests embrace impartially the......
Novel Piston-ring Design.
Although considerable study has been devoted to the perfection of the method of producing the conventional cast-iron piston ring, with which the users of internal-combustion......