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1. Wide Applications: Versatile measuring ruler, with a protractor to draw the desired figure, can also draw arcs curve, horizontal parallel line

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2 Pieces Multifunctional Drawing Ruler, Plastic Multipurpose Draw Round Curve Horizontal Parallel Vertical Line Measuring Drafting Template Rulers for School Office Supplies : Office Products

Multi-function --- Can be use as a compass, horizontal ruler, straightedge, protractor, circle template and angle template Practicability

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Woodworking Measurement to Take the Shape of the Gauge to Take the Shape of the Device Irregular Measurement Arc Ruler on OnBuy

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Can be used as a parallel straghtedge, protractor, T-square and compass. Draw circles up to 16 diameter at 1/2 intervals. Draw and measure angles in 1 degree increments. Aluminnum roller bar for smooth-gliding action. Non-skid rubber rings for a firm grip on any surface. Three sides with 1/16 graduated edges.

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Aixuandocr Rolling Ruler, Measuring Parallel Ruler, Multi-Purpose Drawing Ruler for Drafting, Measuring, Calligraphy, Art - 12 Inch : Office Products

Multifunction Rotatable Drawing Ruler Students Mathematical Ellipse Tool Circle Drafting Stereo B9F7