HoloLens enables students to explore the company's own grinding machines together directly in the classroom, in 3D and at their original size. They can move freely around the placed 3D object, open the machine and disassemble it, thereby deepening their understanding of its functionality and inner workings. In addition, participants from remote locations can be integrated into lessons regardless of location. Thanks to ARKit, the AR framework for iOS, it is possible for apprentices to study the content on their usual devices at home or on the go on the iPad or iPhone.