Conversion. Copper and brass processing. Gaging drawn brass bar. Brass or copper supplied in bars finds many uses in the Navy. Most frequently it is cut to short lengths and machined to form parts of machinery, guns, and other implements of war. While dimensions are apt to vary, even slightly, close tolerances as to width and thickness must be observed. Here an inspector is checking dimensions with a micrometer. Chase Copper and Brass Company, Euclid, Ohio by Alfred T. Palmer