Thoughtful Design
Geometry compass has spring bow head design and grooved knob for perfect grip.
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Easy Adjustment
Metal compass easy to control the size of the circle, when your rotate the center wheel,it locks and does not slide when draw.
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Tighten by Screw
Drawing compass lead tip & steel needle sit in a milled groove tightened by screw & thumb Nut.it is stable when drafting.
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With Plastic Bag
Math compass has sufficient quantity and replacement device.with transparent soft plastic bag, it is easy to store and use.
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