PeriO
PeriO is a multifunctional drawing compass used to draw circles, arcs and straight lines. The radius is set by moving the two sides and is shown on a central disc. A silicone holder in the middle accepts pens of different sizes. The rotation of the wheels measures the length of a drawn line and the angle of an arc. When the angle between the two sides is 180 degrees, the drawn line is straight. The central disc can be rotated so that circles are drawn smoothly. The shell is made of aluminium to reduce weight, and no sharp point is needed.
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