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2PCS Metal Ruler, Steel Ruler with Inch and Metric, Stainless Steel Ruler Set ( 6, 12 inch), Easy to Read inch, mm, cm, for School, Office, Home, Architect, Engineers, Craft - - Amazon.com
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Stainless Steel 60cm Ruler with Stamped mm and cm Graduations - Eisco Labs: Amazon.com: Tools & Home Improvement
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