A device for displacing elongated bodies transversely to their axes comprises at least two parallel and horizontal supporting bars of circular cross section, lying in the same plane and having each a longitudinal, outwardly open groove which houses a slide of which the cross section corresponds to that of the groove and has a part inscribed in the circumference of the bar section. Means are provided for slightly rotating the bars about their axes for longitudinally displacing the slides within the grooves. The elongated body to be displaced is placed on the bars so as to rest on the slides which are then moved to displace the body; afterwards, the bars are rotated so that the body is no longer in contact with the slides, which can be moved back to the initial position.