STRAIGhTNESS MEASUREMENT USING LASER-SCAN-MICROMETERS
For straightness measurement you need at least three micrometers. To detect deviations in all directions, rotating the tube is typically acceptable along its longitudinal axis during inspection. This typically is the case when measurement takes place after the straightener. Quality verification of the bending of the sample (mm per 1 m, 2 m or 3 m).
It is also possible to verify the diameter and ovality. Optionally the system can be upgrated to certify lack of hook ends.