ABB was the first company to market a fully functional system for flatness measurement and control.
The table below is a summary of Stressometer Measurement and Control Systems sold or installed worldwide since 1967.
| Type of mill | Total | Steel | Stainless | Aluminium | Copper |
| Single stands | 195 | 71 | 16 | 92 | 16 |
 |  |  |  |  |  |
| Tandem mills | 147 | 118 | 7 | 19 | 3 |
 |  |  |  |  |  |
| Cluster/Senszimir | 93 | 5 | 83 | - | 5 |
 |  |  |  |  |  |
Skinpass/
Temper mills | 58 | 51 | 6 | 1 | - |
 |  |  |  |  |  |
| Others | 2 | 1 | - | 1 | - |
 |  |  |  |  |  |
| Foil | 14 | - | - | 13 | 1 |
 |  |  |  |  |  |
 | 509 | 246 | 112 | 126 | 25 |