Westcott B-85B BLACK, 18" X 2" 8ths Graph Beveled Plastic Clear Ruler

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Transparent Beveled Graph Ruler with Zero-Centering Scale, Back-to-School, Sc...

Transparent Beveled Graph Ruler with Zero-Centering Scale, Back-To-School, Schoo

Transparent Beveled Graph Ruler ZeroCentering Scale Classroom 2x18 Inch