| http://www.w3.org/ns/prov#value | - ?? Set up and operate machines, such as lathes, cutters, shears, borers, millers, grinders, presses, drills, and auxiliary machines, to make metallic and plastic work pieces. ?? Observe machine operation to detect work piece defects or machine malfunctions, adjusting machines as necessary. ?? Inspect work pieces for defects, and measure work pieces to determine accuracy of machine operation, using
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