The invention relates to a fixing device for exactly, ergonomically and safely holding and positioning different elements used for different steps of training and/or licence exams for a welder profession. Said device consists of a post (3) which is welded to a plate (1), receives a bracket (8) movable about the post (3) and adjustable in height by a mobile clamping ring (4). A pivotable orientable arm (12), which receives a platform (20) or gas chambers (43, 64) to which weldable tubes or samples are fixed in differently selected positions and axes, is connected to the post (3). The inventive device is particularly suitable for equipment of any welder profession trainings and for examining centres delivering said profession licences.
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