  The increased phase sensitivity of N00N states has been used in many
experiments, often involving photon paths or polarization. Here we
experimentally combine the phase sensitivity of N00N states with the orbital
angular momentum (OAM) of photons up to 100$\,\hslash$, to resolve rotations of
a light field around its optical axis. The results show that both a higher
photon number and larger OAM increase the resolution and achievable
sensitivity. The presented method opens a viable path to unconditional angular
super-sensitivity and accessible generation of N00N states between any
transverse light fields.
