Book support for fixing book, has axially adjustable supporting elements including rolling device and fastened to rotatable lever elements at back structure, to utilize books having thickness of eighty millimeter

摘要

The support has axially adjustable supporting elements fastened at rotatable lever elements at a back structure, to utilize books having a thickness of 80 millimeter. An opened book is held in position from the axially adjustable supporting elements. The supporting elements have a rolling device at an inward lying end. The supporting elements have cone shape at the inward lying end. The supporting elements are fixed by magnets, to allow a free positioning of the supporting elements.