Photo 1 of Pacific Arc Engineer Triangle Scale Ruler 12 Inch with Etched Markings in Fully Divided 10, 20, 30, 40, 50, and 60 Parts to The inch

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Photo 1 of Pacific Arc Engineer Triangle Scale Ruler 12 Inch with Etched Markings in Fully Divided 10, 20, 30, 40, 50, and 60 Parts to The inchPhoto 2 of Pacific Arc Engineer Triangle Scale Ruler 12 Inch with Etched Markings in Fully Divided 10, 20, 30, 40, 50, and 60 Parts to The inch