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Colman GYZJ 934-1 surface hardness tester - $390
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The Original GYZJ-934-1 for ASTM B648
portable hardness testers. Official Barcol Impressor® scale, for testing of Aluminum Alloys, Soft Metals, Plastics, Fiberglass Sheets, Tanks, Surfaces, Fire Department Ladders, Composite Materials, Rubber of Leather, Laminates, Lead. Made in the USA