The optimization of the performances of the next generation of Adaptive Optics (AO) systems dedicated to future generation of extremely large telescopes (ELT), requires a precise specification of their different components. Technical specifications of these Wide-Field AO systems are related to the atmospheric turbulence particularly, the profile of the structure constant of the refractive index C2 N(h), the outer scale profile L0(h), the coherence time τ0 and the isoplanatic domain θ0. Most of these parameters are now provided by a new generalized monitor called Moon Limb Profiler (PML) but known initially as Profileur Bord Lunaire (PBL). The PML/PBL technique is based on the Moon limb observation through two small subapertures (6cm) separated by a baseline of ∼ 27cm as in a DIMM (Differential Image Motion Monitor) configuration. The Moon limb offers a continuum of double stars at different angular separations allowing the scan the atmosphere with a very high vertical resolution. The PML/PBL instrument has been installed at Dome C in Antarctica and a second copy of this instrument has been developed for mid-latitude sites. The first results of the PML/PBL monitor lead to C2 N(h) profile with 33 layers well distributed over the whole atmosphere with a high resolution particulary, in the ground layer (h ≤ 1km) with a resolution of ∆h = 100m. Other parameters of turbulence are also accessible from this instrument such as the profile of outer scale, the seeing, isoplanatic and isopistonic domains.