Multi-purpose base Model holder base specifically designed to identify the path of insertion on that models where we have to make the surveying and parallel/conometric milling Possibility of measuring the general inclination of the model and the individual inclination of every single element. RAP last version has become also a fundamental device: for implantology where, thanks to the possibility to transfer the CAT data, the dental technician is able to right position, by specific accessories, the drilling guides in the surgical templates; for implant-supported prostheses, because it can identify the individual inclination of every single implant. Thanks to that, using a software, it is possible to compute the A.M.I. (Mean Implant Axis) that represents the centroid of the superstructure, ideal reference for the dimensional prosthetic balance. RAP base can also be equipped with a model holder plate not included, called A21/G. This accessory gives the third angular axis that, together with the two original axis, allows the transfer of the angular correction shown by CAT.