Calibration is done with Wyler equipments (Switzerland) to verify the flatness, this is done by
a method of control using digital electronic level.

A computarized certificate of control is released, to show a micro-topografical check of the reference plan, stating the level of curve and every enchmark and their numerical position.

The traceability of the measurements are carried out in our company or In-Situ, according to the characteristics of the reference plan and its installation in the plant.

If it's necessary, we can restore the reference plan so that it has the required flatness according to standards Din 876/1, Din 876/0 and Din 876/00.