| http://www.w3.org/ns/prov#value | - 7) Measure, mark, and scribe metal or plastic stock to lay out machining, using instruments such as protractors, micrometers, scribes, and rulers.8) Select metals to be used from a range of metals and alloys, based on properties such as hardness and heat tolerance.9) Set up and operate conventional or computer numerically controlled machine tools such as lathes, milling machines, and grinders to c
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