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The multi-function triangle ruler is a circle drawing mechanism composed of a rotating ring and a rotary table at the two sharp corners of the original triangle ruler, a needle-shaped angle drawing mechanism at the protractor, a frame at the bottom edge, and a slot rail in the frame. The slot rail is equipped with a positioning mechanism composed of a distance plate, elastic material, slide plate and a parallel line drawing mechanism composed of a slide block embedded in the slot for sliding.
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Yiwu P&Y Stationery Factory