We show that if no m-plane contains almost all of an m-rectifiable set EβRn, then there exists a single (mβ1)-plane V such that the
radial projection of E has positive m-dimensional measure from every point
outside V.Comment: 6 pages, 2 figures, typos corrected and added references. Accepted to
Annales Academi{\ae} Scientiarum Fennic{\ae} Mathematic