A transmissionreception device for mobile radio applications has a microprocessor, at least one task-specific processor and a processor interface. The system includes: a light source with multiple wavelengths emitted along a single beam path or very nearly collinear beam paths, a path which connects the light source to a wavelength dependent beam separator, and a second path for blocking unwanted output wavelengths which connects the beam separation region to the laser output. This measurement tool assists in the selection andor configuration of a cephalad facet joint prosthesis for implantation in a patient.