Abstract
A device has been developed for the direct recording in stereographic projections of pole figure data as they are supplied from a Geiger counter x‐ray diffraction apparatus. The specimen is rotated systematically in a suitable goniometer about two axes in synchronism with movements of the chart and printer on the recorder. When the diffracted intensity attains any one of seven preset levels, the printer impresses a point of corresponding color on the chart. The point is printed at the location that has the stereographic co‐ordinates of the pole of the diffracting volume. After all possible orientations of the specimen have been explored, an array of colored points will have been obtained on the chart. When contour lines are sketched through points of like color, the usual pole figure with iso‐intensity lines is obtained.

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