  We present VLT/FLAMES spectroscopic observations (R~6500) in the CaII triplet
region for 470 probable kinematic members of the Sculptor (Scl) dwarf
spheroidal galaxy. The accurate velocities (+- 2 km/s) and large area coverage
of Scl allow us to measure a velocity gradient of 7.6_{-2.2}^{+3.0} km/s
deg^{-1} along the Scl projected major axis, likely a signature of intrinsic
rotation. We also use our kinematic data to measure the mass distribution
within this system. By considering independently the kinematics of the distinct
stellar components known to be present in Scl, we are able to relieve known
degeneracies, and find that the observed velocity dispersion profiles are best
fitted by a cored dark matter halo with core radius r_c= 0.5 kpc and mass
enclosed within the last measured point M(< 1.8 kpc)=3.4 +- 0.7 x 10^8 M_sun,
assuming an increasingly radially anisotropic velocity ellipsoid. This results
in a mass-to-light ratio of 158+-33 (M/L)_sun inside 1.8 kpc. An NFW profile
with concentration c=20 and mass M(< 1.8 kpc) = 2.2_{-0.7}^{+1.0} x 10^8 M_sun
is also statistically consistent with the observations, but it tends to yield
poorer fits for the metal rich stars.
