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W-10 6-Inch 8ths Graph Ruler, Transparent, in

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Westcott W-10 6-Inch 8ths Graph Ruler, Transparent, 1 x 6 in

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6-Inch 8ths Graph Ruler - Durable Transparent Design for Accurate Measurements

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6-Inch 8ths Graph Ruler, Transparent, 1 x 6 in