This little tool will help the QC of the company to measure quickly and statistically correct the distance of profiles. This tool can be used during the production, thanks to the rollers, and also for a final product control. The gauge will show directly the correct value when three profiles are being measured. So no additional calculation is needed and no "guessing" of the middle of the profile. The rollers at the measurement tools allow an easy and safe measurement during the production, while the mandrel is rotating and the material is hot, but also after the pipe has been cooled down, it can be carried out.