The existing editions of the treatise De sphaera by Johannes de Sacrobosco testify to a centuries-long commentary tradition transmitting and circulating astronomical knowledge throughout Europe during the early modern period. Since the treatise continuously changed and transformed so did the visual appearance of the work, in terms of not just the images that were added but also the paper instruments, so called volvelles, that began to appear in books in the sixteenth century. The first appeared in De sphaera in an edition by the printer Joseph Klug of Wittenberg. Over the course of the sixteenth century, several different volvelles were designed and printed, forming three groups, which I called the Wittenberg group, the Seville group, and the Leiden group. This chapter describes how the groups were formed, which volvelles they contain, and how the data for their investigation was collected with the help of tools such as CorDeep and the Sphaera Infrastructure Tool, which were developed within the research project The Sphere. In addition, a brief insight into the situation of the Privilegia Impressoria in the context of the volvelles is given in order to open the discussion for desiderata in this direction.