Patent ID: 7310890

Claim:
An apparatus for measuring the internal and external profile of metal pipes at the ends thereof, comprising at least a pair of sensors ( 11 a , 11 b ) suitable for measuring the distance from the external and from the internal profile respectively of the pipe ( 1 ) kept in a fixed position, with said sensors mounted on a support ( 10 ) orthogonal to the theoretical axis (X-X) of the pipe ( 1 ) and rotatable around its axis of rotation, there being provided means for carrying vertically said axis of rotation next to said axis (X-X) and means suitable for recording the measure data taken for each polar coordinate relevant to the instantaneous angular position of said sensors ( 11 a , 11 b ) during the rotation of said support ( 10 ) driven by motor means ( 21 ), in correspondence of means ( 20 ) suitable for detecting said angular position, characterized in that said support ( 10 ) of the sensors ( 11 a , 11 b ) is mounted at the end of an internally hollow spindle or sleeve ( 12 ) which is driven at the opposite end by means ( 21 , 22 , 22 a ) in order to be drawn into rotation with respect to a slide member ( 13 ) vertically movable for changing the height of the axis of rotation thereof and slidable in a direction parallel to said axis.