Folding and measuring device for folding and measuring a workpiece, - wherein the folding and measuring device comprises a manipulator having a manipulator arm, a folding head, arranged on the manipulator arm and having a folding roller, and a counter-folding element having a folding bed, - wherein the folding and measuring device comprises a contactlessly operating measuring device, - wherein the counter-folding element comprises a bearing surface, on which the workpiece rests during the folding, characterized - in that the counter-folding element comprises a reference area, - in that the reference area is arranged peripherally around the bearing surface and forms a peripheral shoulder, wherein the reference area has a horizontal contact surface, a first vertical contact surface and a second vertical contact surface, which form the shoulder, - in that the contactlessly operating measuring device is aligned in such a way that, when the folding roller is rolling on the workpiece, it senses both a folding portion, produced directly by the folding roller, and the reference area, - in that a fourth distance and a third distance are defined by the shoulder of the folding bed as fixed in such a way that the measuring device can reliably carry out the calculation with an optical geometry sensor in almost every position, - in that the folding and measuring device comprises a processor unit, wherein, on the basis of the constant third distance, already stored in the processor unit and representing the distance from the horizontal contact surface to the bearing surface, a packing dimension of the fold created is calculated by the processor unit, - wherein, on the basis of the constant fourth distance, already stored in the processor unit and representing the distance between the first vertical contact surface and the second vertical contact surface, an overlapping dimension of the fold created is calculated by the processor unit. - wherein the folding and measuring device comprises a manipulator having a manipulator arm, a folding head, arranged on the manipulator arm and having a folding roller, and a counter-folding element having a folding bed, - wherein the folding and measuring device comprises a contactlessly operating measuring device, - wherein the counter-folding element comprises a bearing surface, on which the workpiece rests during the folding, - in that the counter-folding element comprises a reference area, - in that the reference area is arranged peripherally around the bearing surface and forms a peripheral shoulder, wherein the reference area has a horizontal contact surface, a first vertical contact surface and a second vertical contact surface, which form the shoulder, - in that the contactlessly operating measuring device is aligned in such a way that, when the folding roller is rolling on the workpiece, it senses both a folding portion, produced directly by the folding roller, and the reference area, - in that a fourth distance and a third distance are defined by the shoulder of the folding bed as fixed in such a way that the measuring device can reliably carry out the calculation with an optical geometry sensor in almost every position, - in that the folding and measuring device comprises a processor unit, wherein, on the basis of the constant third distance, already stored in the processor unit and representing the distance from the horizontal contact surface to the bearing surface, a packing dimension of the fold created is calculated by the processor unit, - wherein, on the basis of the constant fourth distance, already stored in the processor unit and representing the distance between the first vertical contact surface and the second vertical contact surface, an overlapping dimension of the fold created is calculated by the processor unit.