The very reliable, high-precision two circle goniometer is the basis of a whole range of x-ray powder diffraction solutions. Vertically or horizontally mounted, the STADI P can be built-up in Transmission/Debye-Scherrer or Bragg-Brentano geometry: Transmission/Debye-Scherrer, Reflection/ Bragg-Brentano or both. Two STADI P goniometers, either in the same or different configurations, can be mounted in the same cabinet resulting in two completely independent units. Moreover, two goniometers can share one source.