  We present a proper motion survey over about 200 square degrees towards the
NGP, based on the material used for the construction of the GSC-II, that we are
using to study the vertical structure and kinematics of the Galaxy. In
particular, we measured the rotation velocity of the halo up to 10 kpc above
the galactic plane traced by a sample of RR Lyr{\ae} and BHB giants for which
radial velocities were used to recover the complete distribution of the spatial
velocities. Finally, the impact of astrometric and spectroscopic GAIA
observation are discussed.
