The opening and closing of a camera aperture is one of the most functionally majestic things you can watch. There’s just something about that circular motion that will always make us wonder how it was dreamt up in the first place. Turns out that, in addition to helping make your DSLR pictures great, a similar mechanism can be used to help you draw near perfect circles. Enter Makers Cabinet and the Iris drawing tool. The intuitive and unique Iris uses twenty intricate leaves and a rotating base to create the perfect rotary compass, which allows you to create circles up to 7″ with ease. All you need to add is a really good pencil. Iris has already crushed its Kickstarter funding goal, and since this is the brand’s second successful project, they shouldn’t have any problems meeting their delivery estimate in November.