Patent ID: 8614796

Claim:
A method of measuring a profile of a reflecting face of an end ( 2 ) of a metallic pipe section, in that inserting a pipe section ( 1 ) in a receptacle ( 4 ) of a measuring device which is coated at its inside with a metallic lining ( 8 ) the inserted pipe section ( 1 ) is getting automatically into contact with while loading the receptacle ( 4 ) and in that charging the metallic lining ( 8 ) electrically by an electrical contact ( 6 ) connected to it and charging the end ( 2 ) of the pipe section in that an electrical field is generated between the face and suspended particles ( 19 ) suspending in the ambient air of the face, the particles ( 19 ) being attracted to the face and matt-finishing the face by depositing thereon and afterwards the matt-finished face is sensed with a laser beam ( 16 ) and scattered light ( 17 ) reflected by the matt-finished face is measured by a sensor ( 11 ) and in this way the profile of the face is determined and removing the pipe section ( 1 ) from the measuring device after the measuring of the profile and discharges and the suspended particles ( 19 ) spontaneously drop off again.