Area of Effect Compass
thingiverse
A very simple 2-point compass which uses a pin or tack as it's axis of rotation. For use as an area of effect drawing tool for wet erase type gaming mats to plot out spells, explosions or other random round things. Holes are 1/8" in diameter and spaced on 1" increments. They are countersunk to allow wide tip markers, (we use Crayola Washables at our house). Makes a good straight-edge as well.
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