The Rotio

The Rotio
Rotio has an “eye” that lets you see the center of the circle you want to draw. You simply press down on it to secure it on the paper, fit the tip of the pen or pencil into one of its holes, and then swivel away to your perfect circle. The minimalist metal design of the Rotio also ensured that it would outlive the often flimsy compasses produced for mass consumption.

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