Place the center disk hole on your starting point and choose your desired circle size (in 1/8" increments). Insert the pen into the hole and then hold down the center disk. Sweep around with the pen in the hole until the circle is complete.
It has an easy pickup handle.
Use included circle stencils to draw circles less than 1" diameter (1/16" to 9/16" diameter).
Color may vary.
® Helix is a registered trademark.