The ES2 Mousepad Aim Trainer Edition was designed to quickly adjust a gaming mouse settings according to personal preferences. It is used when switching mouse to adjust one mouse to match another mouse's sensitivity settings with precision.
Although the distance between each marking is close to 1cm, it is not exactly 1cm. The distance of the gaps will depend on several factors including humidity, temperature, how new the mousepad is, how the mousepad was applied on a surface, and other factors that may shrink the fabric. This product uses stretchable fabric, so the designed measurement is an approximate length and may have slight discrepancies depending on how it is applied.