Abstract: Device and method for performing a measurement of at least one geometrical dimension of an object, where: a reference model of the object is acquired; the object is gripped by gripping elements (5) and a first image of the object is taken via optical elements (2); the object is translated and rotated in the three dimension by the gripping elements while images of the object are taken by the optical elements (2) until reaching a condition representative of the superimposition of the perimeter of the image of the object or of a portion of it with those of the reference model; then the measurement of the geometrical dimension is performed.

Abstract: A process for renovating pipes wherein a particulate abrasive material is passed through the pipe to loosen the internal deposits, and after the abrasive material and internal deposits are removed from the pipe, a coating of a curable resinous or plastic material is applied to the interior of the pipe. An alternately produced pressure drop between the two ends of the pipe is employed to cause the particulate abrasive material to reciprocate within the interior of the pipe and thereby effectively loosen the internal deposits and avoid cloggages resulting from the loosened and detached internal deposits.