Pencil Top, Case, and ruler.
thingiverse
This versatile pencil top accommodates two pencils and transforms them into compasses for drawing circles, using Thingiverse components. The eraser on the pencil-shaped case is removable, allowing storage for not only pencils but also the pencil top. The ruler features holes along its sides for attachment to a 3-ring binder and a raised middle section for easy handling when lying flat.
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