Abstract: A dynamic procedure to measure the movability of teeth wherein a given motion is applied to a tooth to cause a displacement and wherein the average displacement rate of the tooth is measured. The instrument implementing this procedure comprises means (4-8) for generating the given motion, means for releasing said given motion, (10-12), and means (13) for transmitting this given motion to the tooth. The tooth displacement is measured by a magnetic pickup (14) emitting an electric signal representing the tooth displacement to an electronic data-processing and display circuit.

Abstract: An altazimuth orientation support for a panel for adjusting the panel in elevation and in azimuth including a vertical pivot and support therefore enabling rotation of the panel around a vertical axis, a mounting integral with the pivot for carrying the panel and enabling pivotal adjustment of the panel about a horizontal axis, a framework extending rearwardly from the panel to a circular trackway and means for driving the framework along the trackway for azimuth orientation, and means associated with the framework for adjusting the panel about the horizontal axis.