The experiment chamber is contained in aclosed, radiation-proof housing with a transparent synthetic-glass shield. Thehigh vacuum X-Ray tube with the directly heated tungsten cathode and copperanode is positioned in a borosilicate glass chamber with a thin walled, concaveray emission window. A lead glass hood with a collimator causes X-rays toemerge in parallel with the experiment plane and provides a shield againstscattered radiation. The horizontal counter tube goniometer consists of acentral sample holder and the swiveling arm. In the form of a slight ray, thisarms serves as a mount for the GM Tube, ionization chamber as well asexperimental devices in slide format or on a 5cm X 5cm base plate. Thisswiveling arm can be rotated manually independently of the sample holder or ata fixed mutual angle with the ratio of 2:1, for instant, for experimentsinvolving Bragg's refection. The devices equipped with angle and mm scale,position marking for experimental devices, as well as radiation proof bushingsfor cables and houses.